Move VisibleUnitsTest.startOfWord to VisibleUnitsWordTest

This patch moves |VisibleUnitsTest.startOfword| to |VisibleUnitsWordTest| to
improve grouping of test cases for ease of maintenance.

Note: The patch[1] moves |VisibleUnitsWordTest.endOfWord| to
|VisibleUnitsWordTest|.


[1] http://crrev.com/c/923604 Move VisibleUnitsTest.endOfWord to
VisibleUnitsWordTest

Change-Id: Id197e62704bb31dfc66a6a83ec24aabe3ccf21f9
Reviewed-on: https://chromium-review.googlesource.com/923606
Commit-Queue: Yoshifumi Inoue <yosin@chromium.org>
Reviewed-by: Yoichi Osato <yoichio@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537248}

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

@@ -1602,72 +1602,6 @@ TEST_F(VisibleUnitsTest, startOfSentence) {
                 .DeepEquivalent());
 }
 
-TEST_F(VisibleUnitsTest, startOfWord) {
-  const char* body_content =
-      "<a id=host><b id=one>1</b> <b id=two>22</b></a><i id=three>333</i>";
-  const char* shadow_content =
-      "<p><u id=four>44444</u><content select=#two></content><span id=space> "
-      "</span><content select=#one></content><u id=five>55555</u></p>";
-  SetBodyContent(body_content);
-  ShadowRoot* shadow_root = SetShadowContent(shadow_content, "host");
-
-  Node* one = GetDocument().getElementById("one")->firstChild();
-  Node* two = GetDocument().getElementById("two")->firstChild();
-  Node* three = GetDocument().getElementById("three")->firstChild();
-  Node* four = shadow_root->getElementById("four")->firstChild();
-  Node* five = shadow_root->getElementById("five")->firstChild();
-  Node* space = shadow_root->getElementById("space")->firstChild();
-
-  EXPECT_EQ(
-      Position(one, 0),
-      StartOfWord(CreateVisiblePositionInDOMTree(*one, 0)).DeepEquivalent());
-  EXPECT_EQ(
-      PositionInFlatTree(space, 1),
-      StartOfWord(CreateVisiblePositionInFlatTree(*one, 0)).DeepEquivalent());
-
-  EXPECT_EQ(
-      Position(one, 0),
-      StartOfWord(CreateVisiblePositionInDOMTree(*one, 1)).DeepEquivalent());
-  EXPECT_EQ(
-      PositionInFlatTree(space, 1),
-      StartOfWord(CreateVisiblePositionInFlatTree(*one, 1)).DeepEquivalent());
-
-  EXPECT_EQ(
-      Position(one, 0),
-      StartOfWord(CreateVisiblePositionInDOMTree(*two, 0)).DeepEquivalent());
-  EXPECT_EQ(
-      PositionInFlatTree(four, 0),
-      StartOfWord(CreateVisiblePositionInFlatTree(*two, 0)).DeepEquivalent());
-
-  EXPECT_EQ(
-      Position(one, 0),
-      StartOfWord(CreateVisiblePositionInDOMTree(*two, 1)).DeepEquivalent());
-  EXPECT_EQ(
-      PositionInFlatTree(four, 0),
-      StartOfWord(CreateVisiblePositionInFlatTree(*two, 1)).DeepEquivalent());
-
-  EXPECT_EQ(
-      Position(one, 0),
-      StartOfWord(CreateVisiblePositionInDOMTree(*three, 1)).DeepEquivalent());
-  EXPECT_EQ(
-      PositionInFlatTree(space, 1),
-      StartOfWord(CreateVisiblePositionInFlatTree(*three, 1)).DeepEquivalent());
-
-  EXPECT_EQ(
-      Position(four, 0),
-      StartOfWord(CreateVisiblePositionInDOMTree(*four, 1)).DeepEquivalent());
-  EXPECT_EQ(
-      PositionInFlatTree(four, 0),
-      StartOfWord(CreateVisiblePositionInFlatTree(*four, 1)).DeepEquivalent());
-
-  EXPECT_EQ(
-      Position(space, 1),
-      StartOfWord(CreateVisiblePositionInDOMTree(*five, 1)).DeepEquivalent());
-  EXPECT_EQ(
-      PositionInFlatTree(space, 1),
-      StartOfWord(CreateVisiblePositionInFlatTree(*five, 1)).DeepEquivalent());
-}
-
 TEST_F(VisibleUnitsTest,
        endsOfNodeAreVisuallyDistinctPositionsWithInvisibleChild) {
   // Repro case of crbug.com/582247

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

@@ -148,6 +148,72 @@ TEST_F(VisibleUnitsWordTest, StartOfWordFirstLetter) {
   EXPECT_EQ("<p> (1) abc def|</p>", DoStartOfWord("<p> (1) abc def</p>|"));
 }
 
+TEST_F(VisibleUnitsWordTest, StartOfWordShadowDOM) {
+  const char* body_content =
+      "<a id=host><b id=one>1</b> <b id=two>22</b></a><i id=three>333</i>";
+  const char* shadow_content =
+      "<p><u id=four>44444</u><content select=#two></content><span id=space> "
+      "</span><content select=#one></content><u id=five>55555</u></p>";
+  SetBodyContent(body_content);
+  ShadowRoot* shadow_root = SetShadowContent(shadow_content, "host");
+
+  Node* one = GetDocument().getElementById("one")->firstChild();
+  Node* two = GetDocument().getElementById("two")->firstChild();
+  Node* three = GetDocument().getElementById("three")->firstChild();
+  Node* four = shadow_root->getElementById("four")->firstChild();
+  Node* five = shadow_root->getElementById("five")->firstChild();
+  Node* space = shadow_root->getElementById("space")->firstChild();
+
+  EXPECT_EQ(
+      Position(one, 0),
+      StartOfWord(CreateVisiblePositionInDOMTree(*one, 0)).DeepEquivalent());
+  EXPECT_EQ(
+      PositionInFlatTree(space, 1),
+      StartOfWord(CreateVisiblePositionInFlatTree(*one, 0)).DeepEquivalent());
+
+  EXPECT_EQ(
+      Position(one, 0),
+      StartOfWord(CreateVisiblePositionInDOMTree(*one, 1)).DeepEquivalent());
+  EXPECT_EQ(
+      PositionInFlatTree(space, 1),
+      StartOfWord(CreateVisiblePositionInFlatTree(*one, 1)).DeepEquivalent());
+
+  EXPECT_EQ(
+      Position(one, 0),
+      StartOfWord(CreateVisiblePositionInDOMTree(*two, 0)).DeepEquivalent());
+  EXPECT_EQ(
+      PositionInFlatTree(four, 0),
+      StartOfWord(CreateVisiblePositionInFlatTree(*two, 0)).DeepEquivalent());
+
+  EXPECT_EQ(
+      Position(one, 0),
+      StartOfWord(CreateVisiblePositionInDOMTree(*two, 1)).DeepEquivalent());
+  EXPECT_EQ(
+      PositionInFlatTree(four, 0),
+      StartOfWord(CreateVisiblePositionInFlatTree(*two, 1)).DeepEquivalent());
+
+  EXPECT_EQ(
+      Position(one, 0),
+      StartOfWord(CreateVisiblePositionInDOMTree(*three, 1)).DeepEquivalent());
+  EXPECT_EQ(
+      PositionInFlatTree(space, 1),
+      StartOfWord(CreateVisiblePositionInFlatTree(*three, 1)).DeepEquivalent());
+
+  EXPECT_EQ(
+      Position(four, 0),
+      StartOfWord(CreateVisiblePositionInDOMTree(*four, 1)).DeepEquivalent());
+  EXPECT_EQ(
+      PositionInFlatTree(four, 0),
+      StartOfWord(CreateVisiblePositionInFlatTree(*four, 1)).DeepEquivalent());
+
+  EXPECT_EQ(
+      Position(space, 1),
+      StartOfWord(CreateVisiblePositionInDOMTree(*five, 1)).DeepEquivalent());
+  EXPECT_EQ(
+      PositionInFlatTree(space, 1),
+      StartOfWord(CreateVisiblePositionInFlatTree(*five, 1)).DeepEquivalent());
+}
+
 TEST_F(VisibleUnitsWordTest, StartOfWordTextSecurity) {
   // Note: |StartOfWord()| considers security characters as a sequence "x".
   InsertStyleElement("s {-webkit-text-security:disc;}");