Add BiDi-related test cases to LocalCaretRectTest

This patch adds test cases of LocalCaretRectOfPosition() for
positions at BiDi boundaries but not logical line boundaries.

Test cases are named in format:

In{BlockDir}Block{BaseRunDir}BaseRun{Side}{NestedRun}{Deep}

- BlockDir: Direction of containing block, either 'Ltr' or 'Rtl'
- BaseRunDir: Direction of the lowest BiDi level in the block,
  either 'Ltr' or 'Rtl'
- Side: Location of caret, either 'Before' or 'After' a nested
  BiDi run
- NestedRun: Information of nested BiDi run(s) at the caret location.
- Deep: Whether the caret position in DOM is affiliated to the inner
  most text node (i.e., 'Deep') or not

See https://goo.gl/fV2sSN for more details about test generation.

Bug: 822575
Change-Id: I171c17ace0ca38ef051db7a5c6ab14cc870be009
Reviewed-on: https://chromium-review.googlesource.com/965882Reviewed-by: Yoichi Osato <yoichio@chromium.org>
Commit-Queue: Xiaocheng Hu <xiaochengh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543966}

third_party/WebKit/Source/core/editing/BUILD.gn

@@ -329,6 +329,7 @@ jumbo_source_set("unit_tests") {
     "GranularityStrategyTest.cpp",
     "InlineBoxPositionTest.cpp",
     "LayoutSelectionTest.cpp",
+    "LocalCaretRectBiDiTest.cpp",
     "LocalCaretRectTest.cpp",
     "PositionIteratorTest.cpp",
     "PositionTest.cpp",

third_party/WebKit/Source/core/editing/LocalCaretRectBiDiTest.cpp

+// Copyright 2018 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/editing/LocalCaretRect.h"
+
+#include "core/editing/PositionWithAffinity.h"
+#include "core/editing/TextAffinity.h"
+#include "core/editing/testing/EditingTestBase.h"
+
+namespace blink {
+
+class LocalCaretRectBiDiTest : public EditingTestBase {};
+
+// This file contains script-generated tests for LocalCaretRectOfPosition()
+// that are related to Bidirectional text. The test cases are only for
+// behavior recording purposes, and do not necessarily reflect the
+// correct/desired behavior.
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunAfterRtlRunTouchingLineBoundary) {
+  // Sample: A B C|d e f
+  // BiDi:   1 1 1 0 0 0
+  // Visual: C B A|d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr><bdo dir=rtl>ABC</bdo>|def</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunAfterRtlRun) {
+  // Sample: g h i A B C|d e f
+  // BiDi:   0 0 0 1 1 1 0 0 0
+  // Visual: g h i C B A|d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>ghi<bdo dir=rtl>ABC</bdo>|def</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunAfterRtlRunTouchingLineBoundaryAtDeepPosition) {
+  // Sample: A B C|d e f
+  // BiDi:   1 1 1 0 0 0
+  // Visual: C B A|d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr><bdo dir=rtl>ABC|</bdo>def</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunAfterRtlRunAtDeepPosition) {
+  // Sample: g h i A B C|d e f
+  // BiDi:   0 0 0 1 1 1 0 0 0
+  // Visual: g h i C B A|d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>ghi<bdo dir=rtl>ABC|</bdo>def</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunAfterTwoNestedRuns) {
+  // Sample: D E F a b c|g h i
+  // BiDi:   1 1 1 2 2 2 0 0 0
+  // Visual: a b c F E D|g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr><bdo dir=rtl>DEF<bdo "
+      "dir=ltr>abc</bdo></bdo>|ghi</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunAfterTwoNestedRunsAtDeepPosition) {
+  // Sample: D E F a b c|g h i
+  // BiDi:   1 1 1 2 2 2 0 0 0
+  // Visual: a b c F E D|g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr><bdo dir=rtl>DEF<bdo "
+      "dir=ltr>abc|</bdo></bdo>ghi</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunAfterThreeNestedRuns) {
+  // Sample: G H I d e f A B C|j k l
+  // BiDi:   1 1 1 2 2 2 3 3 3 0 0 0
+  // Visual: d e f C B A I H G|j k l
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr><bdo dir=rtl>GHI<bdo dir=ltr>def<bdo "
+      "dir=rtl>ABC</bdo></bdo></bdo>|jkl</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(90, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunAfterThreeNestedRunsAtDeepPosition) {
+  // Sample: G H I d e f A B C|j k l
+  // BiDi:   1 1 1 2 2 2 3 3 3 0 0 0
+  // Visual: d e f C B A I H G|j k l
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr><bdo dir=rtl>GHI<bdo dir=ltr>def<bdo "
+      "dir=rtl>ABC|</bdo></bdo></bdo>jkl</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(90, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunAfterFourNestedRuns) {
+  // Sample: J K L g h i D E F a b c|m n o
+  // BiDi:   1 1 1 2 2 2 3 3 3 4 4 4 0 0 0
+  // Visual: g h i a b c F E D L K J|m n o
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr><bdo dir=rtl>JKL<bdo dir=ltr>ghi<bdo "
+      "dir=rtl>DEF<bdo dir=ltr>abc</bdo></bdo></bdo></bdo>|mno</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(120, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunAfterFourNestedRunsAtDeepPosition) {
+  // Sample: J K L g h i D E F a b c|m n o
+  // BiDi:   1 1 1 2 2 2 3 3 3 4 4 4 0 0 0
+  // Visual: g h i a b c F E D L K J|m n o
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr><bdo dir=rtl>JKL<bdo dir=ltr>ghi<bdo "
+      "dir=rtl>DEF<bdo dir=ltr>abc|</bdo></bdo></bdo></bdo>mno</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(120, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunBeforeRtlRunTouchingLineBoundary) {
+  // Sample: d e f|A B C
+  // BiDi:   0 0 0 1 1 1
+  // Visual: d e f|C B A
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>def|<bdo dir=rtl>ABC</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunBeforeRtlRun) {
+  // Sample: d e f|A B C g h i
+  // BiDi:   0 0 0 1 1 1 0 0 0
+  // Visual: d e f|C B A g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>def|<bdo dir=rtl>ABC</bdo>ghi</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunBeforeRtlRunTouchingLineBoundaryAtDeepPosition) {
+  // Sample: d e f|A B C
+  // BiDi:   0 0 0 1 1 1
+  // Visual: d e f|C B A
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>def<bdo dir=rtl>|ABC</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunBeforeRtlRunAtDeepPosition) {
+  // Sample: d e f|A B C g h i
+  // BiDi:   0 0 0 1 1 1 0 0 0
+  // Visual: d e f|C B A g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>def<bdo dir=rtl>|ABC</bdo>ghi</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunBeforeTwoNestedRuns) {
+  // Sample: g h i|a b c D E F
+  // BiDi:   0 0 0 2 2 2 1 1 1
+  // Visual: g h i|F E D a b c
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>ghi|<bdo dir=rtl><bdo "
+      "dir=ltr>abc</bdo>DEF</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunBeforeTwoNestedRunsAtDeepPosition) {
+  // Sample: g h i|a b c D E F
+  // BiDi:   0 0 0 2 2 2 1 1 1
+  // Visual: g h i|F E D a b c
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>ghi<bdo dir=rtl><bdo "
+      "dir=ltr>|abc</bdo>DEF</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunBeforeThreeNestedRuns) {
+  // Sample: j k l|A B C d e f G H I
+  // BiDi:   0 0 0 3 3 3 2 2 2 1 1 1
+  // Visual: j k l I H G|C B A d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>jkl|<bdo dir=rtl><bdo dir=ltr><bdo "
+      "dir=rtl>ABC</bdo>def</bdo>GHI</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunBeforeThreeNestedRunsAtDeepPosition) {
+  // Sample: j k l|A B C d e f G H I
+  // BiDi:   0 0 0 3 3 3 2 2 2 1 1 1
+  // Visual: j k l I H G|C B A d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>jkl<bdo dir=rtl><bdo dir=ltr><bdo "
+      "dir=rtl>|ABC</bdo>def</bdo>GHI</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockLtrBaseRunBeforeFourNestedRuns) {
+  // Sample: m n o|a b c D E F g h i J K L
+  // BiDi:   0 0 0 4 4 4 3 3 3 2 2 2 1 1 1
+  // Visual: m n o L K J|F E D a b c g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>mno|<bdo dir=rtl><bdo dir=ltr><bdo "
+      "dir=rtl><bdo dir=ltr>abc</bdo>DEF</bdo>ghi</bdo>JKL</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockLtrBaseRunBeforeFourNestedRunsAtDeepPosition) {
+  // Sample: m n o|a b c D E F g h i J K L
+  // BiDi:   0 0 0 4 4 4 3 3 3 2 2 2 1 1 1
+  // Visual: m n o L K J|F E D a b c g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=ltr>mno<bdo dir=rtl><bdo dir=ltr><bdo "
+      "dir=rtl><bdo dir=ltr>|abc</bdo>DEF</bdo>ghi</bdo>JKL</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunAfterLtrRunTouchingLineBoundary) {
+  // Sample: a b c|D E F
+  // BiDi:   2 2 2 1 1 1
+  // Visual: F E D a b c|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl><bdo dir=ltr>abc</bdo>|DEF</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunAfterLtrRun) {
+  // Sample: G H I a b c|D E F
+  // BiDi:   1 1 1 2 2 2 1 1 1
+  // Visual: F E D a b c|I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>GHI<bdo dir=ltr>abc</bdo>|DEF</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunAfterLtrRunTouchingLineBoundaryAtDeepPosition) {
+  // Sample: a b c|D E F
+  // BiDi:   2 2 2 1 1 1
+  // Visual: F E D a b c|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl><bdo dir=ltr>abc|</bdo>DEF</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunAfterLtrRunAtDeepPosition) {
+  // Sample: G H I a b c|D E F
+  // BiDi:   1 1 1 2 2 2 1 1 1
+  // Visual: F E D a b c|I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>GHI<bdo dir=ltr>abc|</bdo>DEF</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(60, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunAfterTwoNestedRuns) {
+  // Sample: d e f A B C|G H I
+  // BiDi:   2 2 2 3 3 3 1 1 1
+  // Visual: I H G d e f C B A|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl><bdo dir=ltr>def<bdo "
+      "dir=rtl>ABC</bdo></bdo>|GHI</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(90, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunAfterTwoNestedRunsAtDeepPosition) {
+  // Sample: d e f A B C|G H I
+  // BiDi:   2 2 2 3 3 3 1 1 1
+  // Visual: I H G d e f C B A|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl><bdo dir=ltr>def<bdo "
+      "dir=rtl>ABC|</bdo></bdo>GHI</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(90, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunAfterThreeNestedRuns) {
+  // Sample: g h i D E F a b c|J K L
+  // BiDi:   2 2 2 3 3 3 4 4 4 1 1 1
+  // Visual: L K J g h i a b c F E D|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl><bdo dir=ltr>ghi<bdo dir=rtl>DEF<bdo "
+      "dir=ltr>abc</bdo></bdo></bdo>|JKL</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(120, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunAfterThreeNestedRunsAtDeepPosition) {
+  // Sample: g h i D E F a b c|J K L
+  // BiDi:   2 2 2 3 3 3 4 4 4 1 1 1
+  // Visual: L K J g h i a b c F E D|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl><bdo dir=ltr>ghi<bdo dir=rtl>DEF<bdo "
+      "dir=ltr>abc|</bdo></bdo></bdo>JKL</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(120, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunAfterFourNestedRuns) {
+  // Sample: j k l G H I d e f A B C|M N O
+  // BiDi:   2 2 2 3 3 3 4 4 4 5 5 5 1 1 1
+  // Visual: O N M j k l d e f C B A I H G|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl><bdo dir=ltr>jkl<bdo dir=rtl>GHI<bdo "
+      "dir=ltr>def<bdo dir=rtl>ABC</bdo></bdo></bdo></bdo>|MNO</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(150, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunAfterFourNestedRunsAtDeepPosition) {
+  // Sample: j k l G H I d e f A B C|M N O
+  // BiDi:   2 2 2 3 3 3 4 4 4 5 5 5 1 1 1
+  // Visual: O N M j k l d e f C B A I H G|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl><bdo dir=ltr>jkl<bdo dir=rtl>GHI<bdo "
+      "dir=ltr>def<bdo dir=rtl>ABC|</bdo></bdo></bdo></bdo>MNO</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(150, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunBeforeLtrRunTouchingLineBoundary) {
+  // Sample: D E F|a b c
+  // BiDi:   1 1 1 2 2 2
+  // Visual:|a b c F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>DEF|<bdo dir=ltr>abc</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(0, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunBeforeLtrRun) {
+  // Sample: D E F|a b c G H I
+  // BiDi:   1 1 1 2 2 2 1 1 1
+  // Visual: I H G|a b c F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>DEF|<bdo dir=ltr>abc</bdo>GHI</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunBeforeLtrRunTouchingLineBoundaryAtDeepPosition) {
+  // Sample: D E F|a b c
+  // BiDi:   1 1 1 2 2 2
+  // Visual:|a b c F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>DEF<bdo dir=ltr>|abc</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(0, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunBeforeLtrRunAtDeepPosition) {
+  // Sample: D E F|a b c G H I
+  // BiDi:   1 1 1 2 2 2 1 1 1
+  // Visual: I H G|a b c F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>DEF<bdo dir=ltr>|abc</bdo>GHI</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunBeforeTwoNestedRuns) {
+  // Sample: G H I|A B C d e f
+  // BiDi:   1 1 1 3 3 3 2 2 2
+  // Visual:|C B A d e f I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>GHI|<bdo dir=ltr><bdo "
+      "dir=rtl>ABC</bdo>def</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(0, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunBeforeTwoNestedRunsAtDeepPosition) {
+  // Sample: G H I|A B C d e f
+  // BiDi:   1 1 1 3 3 3 2 2 2
+  // Visual:|C B A d e f I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>GHI<bdo dir=ltr><bdo "
+      "dir=rtl>|ABC</bdo>def</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(0, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunBeforeThreeNestedRuns) {
+  // Sample: J K L|a b c D E F g h i
+  // BiDi:   1 1 1 4 4 4 3 3 3 2 2 2
+  // Visual:|F E D a b c g h i L K J
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>JKL|<bdo dir=ltr><bdo dir=rtl><bdo "
+      "dir=ltr>abc</bdo>DEF</bdo>ghi</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(0, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunBeforeThreeNestedRunsAtDeepPosition) {
+  // Sample: J K L|a b c D E F g h i
+  // BiDi:   1 1 1 4 4 4 3 3 3 2 2 2
+  // Visual:|F E D a b c g h i L K J
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>JKL<bdo dir=ltr><bdo dir=rtl><bdo "
+      "dir=ltr>|abc</bdo>DEF</bdo>ghi</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(0, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InLtrBlockRtlBaseRunBeforeFourNestedRuns) {
+  // Sample: M N O|A B C d e f G H I j k l
+  // BiDi:   1 1 1 5 5 5 4 4 4 3 3 3 2 2 2
+  // Visual: I H G|C B A d e f j k l O N M
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>MNO|<bdo dir=ltr><bdo dir=rtl><bdo "
+      "dir=ltr><bdo dir=rtl>ABC</bdo>def</bdo>GHI</bdo>jkl</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InLtrBlockRtlBaseRunBeforeFourNestedRunsAtDeepPosition) {
+  // Sample: M N O|A B C d e f G H I j k l
+  // BiDi:   1 1 1 5 5 5 4 4 4 3 3 3 2 2 2
+  // Visual: I H G|C B A d e f j k l O N M
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=ltr><bdo dir=rtl>MNO<bdo dir=ltr><bdo dir=rtl><bdo "
+      "dir=ltr><bdo dir=rtl>|ABC</bdo>def</bdo>GHI</bdo>jkl</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(30, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunAfterRtlRunTouchingLineBoundary) {
+  // Sample: A B C|d e f
+  // BiDi:   3 3 3 2 2 2
+  // Visual:|C B A d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr><bdo dir=rtl>ABC</bdo>|def</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunAfterRtlRun) {
+  // Sample: g h i A B C|d e f
+  // BiDi:   2 2 2 3 3 3 2 2 2
+  // Visual: g h i|C B A d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>ghi<bdo dir=rtl>ABC</bdo>|def</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunAfterRtlRunTouchingLineBoundaryAtDeepPosition) {
+  // Sample: A B C|d e f
+  // BiDi:   3 3 3 2 2 2
+  // Visual:|C B A d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr><bdo dir=rtl>ABC|</bdo>def</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunAfterRtlRunAtDeepPosition) {
+  // Sample: g h i A B C|d e f
+  // BiDi:   2 2 2 3 3 3 2 2 2
+  // Visual: g h i|C B A d e f
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>ghi<bdo dir=rtl>ABC|</bdo>def</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunAfterTwoNestedRuns) {
+  // Sample: D E F a b c|g h i
+  // BiDi:   3 3 3 4 4 4 2 2 2
+  // Visual:|a b c F E D g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr><bdo dir=rtl>DEF<bdo "
+      "dir=ltr>abc</bdo></bdo>|ghi</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(210, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunAfterTwoNestedRunsAtDeepPosition) {
+  // Sample: D E F a b c|g h i
+  // BiDi:   3 3 3 4 4 4 2 2 2
+  // Visual:|a b c F E D g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr><bdo dir=rtl>DEF<bdo "
+      "dir=ltr>abc|</bdo></bdo>ghi</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(210, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunAfterThreeNestedRuns) {
+  // Sample: G H I d e f A B C|j k l
+  // BiDi:   3 3 3 4 4 4 5 5 5 2 2 2
+  // Visual:|d e f C B A I H G j k l
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr><bdo dir=rtl>GHI<bdo dir=ltr>def<bdo "
+      "dir=rtl>ABC</bdo></bdo></bdo>|jkl</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(180, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunAfterThreeNestedRunsAtDeepPosition) {
+  // Sample: G H I d e f A B C|j k l
+  // BiDi:   3 3 3 4 4 4 5 5 5 2 2 2
+  // Visual:|d e f C B A I H G j k l
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr><bdo dir=rtl>GHI<bdo dir=ltr>def<bdo "
+      "dir=rtl>ABC|</bdo></bdo></bdo>jkl</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(180, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunAfterFourNestedRuns) {
+  // Sample: J K L g h i D E F a b c|m n o
+  // BiDi:   3 3 3 4 4 4 5 5 5 6 6 6 2 2 2
+  // Visual:|g h i a b c F E D L K J m n o
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr><bdo dir=rtl>JKL<bdo dir=ltr>ghi<bdo "
+      "dir=rtl>DEF<bdo dir=ltr>abc</bdo></bdo></bdo></bdo>|mno</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(150, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunAfterFourNestedRunsAtDeepPosition) {
+  // Sample: J K L g h i D E F a b c|m n o
+  // BiDi:   3 3 3 4 4 4 5 5 5 6 6 6 2 2 2
+  // Visual:|g h i a b c F E D L K J m n o
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr><bdo dir=rtl>JKL<bdo dir=ltr>ghi<bdo "
+      "dir=rtl>DEF<bdo dir=ltr>abc|</bdo></bdo></bdo></bdo>mno</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(150, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunBeforeRtlRunTouchingLineBoundary) {
+  // Sample: d e f|A B C
+  // BiDi:   2 2 2 3 3 3
+  // Visual: d e f C B A|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>def|<bdo dir=rtl>ABC</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(299, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunBeforeRtlRun) {
+  // Sample: d e f|A B C g h i
+  // BiDi:   2 2 2 3 3 3 2 2 2
+  // Visual: d e f C B A|g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>def|<bdo dir=rtl>ABC</bdo>ghi</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunBeforeRtlRunTouchingLineBoundaryAtDeepPosition) {
+  // Sample: d e f|A B C
+  // BiDi:   2 2 2 3 3 3
+  // Visual: d e f C B A|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>def<bdo dir=rtl>|ABC</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(299, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunBeforeRtlRunAtDeepPosition) {
+  // Sample: d e f|A B C g h i
+  // BiDi:   2 2 2 3 3 3 2 2 2
+  // Visual: d e f C B A|g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>def<bdo dir=rtl>|ABC</bdo>ghi</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunBeforeTwoNestedRuns) {
+  // Sample: g h i|a b c D E F
+  // BiDi:   2 2 2 4 4 4 3 3 3
+  // Visual: g h i F E D a b c|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>ghi|<bdo dir=rtl><bdo "
+      "dir=ltr>abc</bdo>DEF</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(299, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunBeforeTwoNestedRunsAtDeepPosition) {
+  // Sample: g h i|a b c D E F
+  // BiDi:   2 2 2 4 4 4 3 3 3
+  // Visual: g h i F E D a b c|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>ghi<bdo dir=rtl><bdo "
+      "dir=ltr>|abc</bdo>DEF</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(299, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunBeforeThreeNestedRuns) {
+  // Sample: j k l|A B C d e f G H I
+  // BiDi:   2 2 2 5 5 5 4 4 4 3 3 3
+  // Visual: j k l I H G C B A d e f|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>jkl|<bdo dir=rtl><bdo dir=ltr><bdo "
+      "dir=rtl>ABC</bdo>def</bdo>GHI</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(299, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunBeforeThreeNestedRunsAtDeepPosition) {
+  // Sample: j k l|A B C d e f G H I
+  // BiDi:   2 2 2 5 5 5 4 4 4 3 3 3
+  // Visual: j k l I H G C B A d e f|
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>jkl<bdo dir=rtl><bdo dir=ltr><bdo "
+      "dir=rtl>|ABC</bdo>def</bdo>GHI</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(299, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockLtrBaseRunBeforeFourNestedRuns) {
+  // Sample: m n o|a b c D E F g h i J K L
+  // BiDi:   2 2 2 6 6 6 5 5 5 4 4 4 3 3 3
+  // Visual: m n o L K J F E D a b c|g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>mno|<bdo dir=rtl><bdo dir=ltr><bdo "
+      "dir=rtl><bdo dir=ltr>abc</bdo>DEF</bdo>ghi</bdo>JKL</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockLtrBaseRunBeforeFourNestedRunsAtDeepPosition) {
+  // Sample: m n o|a b c D E F g h i J K L
+  // BiDi:   2 2 2 6 6 6 5 5 5 4 4 4 3 3 3
+  // Visual: m n o L K J F E D a b c|g h i
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=ltr>mno<bdo dir=rtl><bdo dir=ltr><bdo "
+      "dir=rtl><bdo dir=ltr>|abc</bdo>DEF</bdo>ghi</bdo>JKL</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunAfterLtrRunTouchingLineBoundary) {
+  // Sample: a b c|D E F
+  // BiDi:   2 2 2 1 1 1
+  // Visual: F E D|a b c
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl><bdo dir=ltr>abc</bdo>|DEF</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunAfterLtrRun) {
+  // Sample: G H I a b c|D E F
+  // BiDi:   1 1 1 2 2 2 1 1 1
+  // Visual: F E D|a b c I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>GHI<bdo dir=ltr>abc</bdo>|DEF</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunAfterLtrRunTouchingLineBoundaryAtDeepPosition) {
+  // Sample: a b c|D E F
+  // BiDi:   2 2 2 1 1 1
+  // Visual: F E D|a b c
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl><bdo dir=ltr>abc|</bdo>DEF</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunAfterLtrRunAtDeepPosition) {
+  // Sample: G H I a b c|D E F
+  // BiDi:   1 1 1 2 2 2 1 1 1
+  // Visual: F E D|a b c I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>GHI<bdo dir=ltr>abc|</bdo>DEF</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunAfterTwoNestedRuns) {
+  // Sample: d e f A B C|G H I
+  // BiDi:   2 2 2 3 3 3 1 1 1
+  // Visual: I H G|d e f C B A
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl><bdo dir=ltr>def<bdo "
+      "dir=rtl>ABC</bdo></bdo>|GHI</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunAfterTwoNestedRunsAtDeepPosition) {
+  // Sample: d e f A B C|G H I
+  // BiDi:   2 2 2 3 3 3 1 1 1
+  // Visual: I H G|d e f C B A
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl><bdo dir=ltr>def<bdo "
+      "dir=rtl>ABC|</bdo></bdo>GHI</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunAfterThreeNestedRuns) {
+  // Sample: g h i D E F a b c|J K L
+  // BiDi:   2 2 2 3 3 3 4 4 4 1 1 1
+  // Visual: L K J|g h i a b c F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl><bdo dir=ltr>ghi<bdo dir=rtl>DEF<bdo "
+      "dir=ltr>abc</bdo></bdo></bdo>|JKL</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(210, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunAfterThreeNestedRunsAtDeepPosition) {
+  // Sample: g h i D E F a b c|J K L
+  // BiDi:   2 2 2 3 3 3 4 4 4 1 1 1
+  // Visual: L K J|g h i a b c F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl><bdo dir=ltr>ghi<bdo dir=rtl>DEF<bdo "
+      "dir=ltr>abc|</bdo></bdo></bdo>JKL</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(210, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunAfterFourNestedRuns) {
+  // Sample: j k l G H I d e f A B C|M N O
+  // BiDi:   2 2 2 3 3 3 4 4 4 5 5 5 1 1 1
+  // Visual: O N M|j k l d e f C B A I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl><bdo dir=ltr>jkl<bdo dir=rtl>GHI<bdo "
+      "dir=ltr>def<bdo dir=rtl>ABC</bdo></bdo></bdo></bdo>|MNO</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(180, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunAfterFourNestedRunsAtDeepPosition) {
+  // Sample: j k l G H I d e f A B C|M N O
+  // BiDi:   2 2 2 3 3 3 4 4 4 5 5 5 1 1 1
+  // Visual: O N M|j k l d e f C B A I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl><bdo dir=ltr>jkl<bdo dir=rtl>GHI<bdo "
+      "dir=ltr>def<bdo dir=rtl>ABC|</bdo></bdo></bdo></bdo>MNO</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(180, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunBeforeLtrRunTouchingLineBoundary) {
+  // Sample: D E F|a b c
+  // BiDi:   1 1 1 2 2 2
+  // Visual: a b c|F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>DEF|<bdo dir=ltr>abc</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunBeforeLtrRun) {
+  // Sample: D E F|a b c G H I
+  // BiDi:   1 1 1 2 2 2 1 1 1
+  // Visual: I H G a b c|F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>DEF|<bdo dir=ltr>abc</bdo>GHI</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunBeforeLtrRunTouchingLineBoundaryAtDeepPosition) {
+  // Sample: D E F|a b c
+  // BiDi:   1 1 1 2 2 2
+  // Visual: a b c|F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>DEF<bdo dir=ltr>|abc</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunBeforeLtrRunAtDeepPosition) {
+  // Sample: D E F|a b c G H I
+  // BiDi:   1 1 1 2 2 2 1 1 1
+  // Visual: I H G a b c|F E D
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>DEF<bdo dir=ltr>|abc</bdo>GHI</bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunBeforeTwoNestedRuns) {
+  // Sample: G H I|A B C d e f
+  // BiDi:   1 1 1 3 3 3 2 2 2
+  // Visual: C B A d e f|I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>GHI|<bdo dir=ltr><bdo "
+      "dir=rtl>ABC</bdo>def</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunBeforeTwoNestedRunsAtDeepPosition) {
+  // Sample: G H I|A B C d e f
+  // BiDi:   1 1 1 3 3 3 2 2 2
+  // Visual: C B A d e f|I H G
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>GHI<bdo dir=ltr><bdo "
+      "dir=rtl>|ABC</bdo>def</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(270, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunBeforeThreeNestedRuns) {
+  // Sample: J K L|a b c D E F g h i
+  // BiDi:   1 1 1 4 4 4 3 3 3 2 2 2
+  // Visual: F E D a b c|g h i L K J
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>JKL|<bdo dir=ltr><bdo dir=rtl><bdo "
+      "dir=ltr>abc</bdo>DEF</bdo>ghi</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunBeforeThreeNestedRunsAtDeepPosition) {
+  // Sample: J K L|a b c D E F g h i
+  // BiDi:   1 1 1 4 4 4 3 3 3 2 2 2
+  // Visual: F E D a b c|g h i L K J
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>JKL<bdo dir=ltr><bdo dir=rtl><bdo "
+      "dir=ltr>|abc</bdo>DEF</bdo>ghi</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest, InRtlBlockRtlBaseRunBeforeFourNestedRuns) {
+  // Sample: M N O|A B C d e f G H I j k l
+  // BiDi:   1 1 1 5 5 5 4 4 4 3 3 3 2 2 2
+  // Visual: I H G C B A d e f|j k l O N M
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>MNO|<bdo dir=ltr><bdo dir=rtl><bdo "
+      "dir=ltr><bdo dir=rtl>ABC</bdo>def</bdo>GHI</bdo>jkl</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+TEST_F(LocalCaretRectBiDiTest,
+       InRtlBlockRtlBaseRunBeforeFourNestedRunsAtDeepPosition) {
+  // Sample: M N O|A B C d e f G H I j k l
+  // BiDi:   1 1 1 5 5 5 4 4 4 3 3 3 2 2 2
+  // Visual: I H G C B A d e f|j k l O N M
+  LoadAhem();
+  InsertStyleElement("div {font: 10px/10px Ahem; width: 300px}");
+  const Position position = SetCaretTextToBody(
+      "<div dir=rtl><bdo dir=rtl>MNO<bdo dir=ltr><bdo dir=rtl><bdo "
+      "dir=ltr><bdo dir=rtl>|ABC</bdo>def</bdo>GHI</bdo>jkl</bdo></bdo></div>");
+  const PositionWithAffinity position_with_affinity(position,
+                                                    TextAffinity::kDownstream);
+  EXPECT_EQ(LayoutRect(240, 0, 1, 10),
+            LocalCaretRectOfPosition(position_with_affinity).rect);
+}
+
+}  // namespace blink