Remove GeometryMapper::PointVisibleInAncestorSpace

It's only called in unittests.

Bug: 992765

Change-Id: I1e5ef83618d089e4ff2d3571a7d26482d8e69974
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1775807
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#691783}

third_party/blink/renderer/platform/graphics/paint/geometry_mapper.cc

@@ -156,29 +156,6 @@ bool GeometryMapper::LocalToAncestorVisualRect(
   return result;
 }
 
-bool GeometryMapper::PointVisibleInAncestorSpace(
-    const PropertyTreeState& local_state,
-    const PropertyTreeState& ancestor_state,
-    const FloatPoint& local_point) {
-  const auto& ancestor_clip = ancestor_state.Clip().Unalias();
-  for (const auto* clip = &local_state.Clip().Unalias();
-       clip && clip != &ancestor_clip; clip = SafeUnalias(clip->Parent())) {
-    FloatPoint mapped_point =
-        SourceToDestinationProjection(local_state.Transform(),
-                                      clip->LocalTransformSpace())
-            .MapPoint(local_point);
-
-    if (!clip->ClipRect().IntersectsQuad(
-            FloatRect(mapped_point, FloatSize(1, 1))))
-      return false;
-
-    if (clip->ClipPath() && !clip->ClipPath()->Contains(mapped_point))
-      return false;
-  }
-
-  return true;
-}
-
 bool GeometryMapper::LocalToAncestorVisualRectInternal(
     const PropertyTreeState& local_state,
     const PropertyTreeState& ancestor_state,

third_party/blink/renderer/platform/graphics/paint/geometry_mapper.h

@@ -217,17 +217,6 @@ class PLATFORM_EXPORT GeometryMapper {
       OverlayScrollbarClipBehavior = kIgnorePlatformOverlayScrollbarSize,
       InclusiveIntersectOrNot = kNonInclusiveIntersect);
 
-  // Returns true if |local_rect| is *not* clipped out by any clips
-  // between |local_state| and |ancestor_state|. This includes not just
-  // rectangular clips but rounded clips, and any clip paths stored on the
-  // ClipPaintPropertyNodes. It does *not* include any "complex" clips (see
-  // LayoutSVGResourceClipper::AsPath for the implementation of the heuristic
-  // which differentiates "simple" from "complex".
-  static bool PointVisibleInAncestorSpace(
-      const PropertyTreeState& local_state,
-      const PropertyTreeState& ancestor_state,
-      const FloatPoint& local_point);
-
   static void ClearCache();
 
  private:

third_party/blink/renderer/platform/graphics/paint/geometry_mapper_test.cc

@@ -809,117 +809,6 @@ TEST_P(GeometryMapperTest, InvertedClip) {
   EXPECT_FALSE(visual_rect.IsTight());
 }
 
-TEST_P(GeometryMapperTest, PointVisibleInAncestorSpaceSimpleClip) {
-  auto clip = CreateClip(c0(), t0(), FloatRoundedRect(10, 10, 50, 50));
-
-  PropertyTreeState local_state(t0(), *clip, e0());
-  PropertyTreeState ancestor_state = PropertyTreeState::Root();
-
-  EXPECT_TRUE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(30, 30)));
-
-  EXPECT_TRUE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(11, 11)));
-
-  EXPECT_FALSE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(5, 5)));
-}
-
-TEST_P(GeometryMapperTest, PointVisibleInAncestorSpaceRoundedClip) {
-  FloatRoundedRect clip_rect(FloatRoundedRect(10, 10, 50, 50));
-  FloatRoundedRect::Radii radii;
-  radii.SetTopLeft(FloatSize(8, 8));
-  clip_rect.SetRadii(radii);
-  auto clip = CreateClip(c0(), t0(), clip_rect);
-
-  PropertyTreeState local_state(t0(), *clip, e0());
-  PropertyTreeState ancestor_state = PropertyTreeState::Root();
-
-  EXPECT_TRUE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(30, 30)));
-
-  // Clipped out by radius.
-  EXPECT_FALSE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(11, 11)));
-
-  EXPECT_FALSE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(5, 5)));
-}
-
-TEST_P(GeometryMapperTest, PointVisibleInAncestorSpaceClipPath) {
-  RefCountedPath* path = new RefCountedPath;
-  path->MoveTo(FloatPoint(10, 10));
-  path->AddLineTo(FloatPoint(10, 60));
-  path->AddLineTo(FloatPoint(60, 60));
-  path->AddLineTo(FloatPoint(60, 10));
-  path->AddLineTo(FloatPoint(10, 10));
-
-  ClipPaintPropertyNode::State state;
-  state.local_transform_space = &t0();
-  state.clip_rect = FloatRoundedRect(FloatRect(0, 0, 500, 500));
-  state.clip_path = base::AdoptRef(path);
-  auto clip = ClipPaintPropertyNode::Create(c0(), std::move(state));
-
-  PropertyTreeState local_state(t0(), *clip, e0());
-  PropertyTreeState ancestor_state = PropertyTreeState::Root();
-
-  EXPECT_TRUE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(30, 30)));
-
-  EXPECT_TRUE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(11, 11)));
-
-  EXPECT_FALSE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(5, 5)));
-}
-
-TEST_P(GeometryMapperTest, PointVisibleInAncestorSpaceSimpleClipWithTransform) {
-  auto transform = Create2DTranslation(t0(), 10, 10);
-  auto clip =
-      CreateClip(c0(), t0(), FloatRoundedRect(FloatRect(20, 20, 50, 50)));
-
-  PropertyTreeState local_state(*transform, *clip, e0());
-  PropertyTreeState ancestor_state = PropertyTreeState::Root();
-
-  EXPECT_TRUE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(30, 30)));
-
-  EXPECT_TRUE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(11, 11)));
-
-  EXPECT_FALSE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(5, 5)));
-}
-
-TEST_P(GeometryMapperTest, PointVisibleInAncestorSpaceClipPathWithTransform) {
-  auto transform = Create2DTranslation(t0(), 10, 10);
-
-  RefCountedPath* path = new RefCountedPath;
-  path->MoveTo(FloatPoint(20, 20));
-  path->AddLineTo(FloatPoint(20, 60));
-  path->AddLineTo(FloatPoint(60, 60));
-  path->AddLineTo(FloatPoint(60, 20));
-  path->AddLineTo(FloatPoint(20, 20));
-
-  ClipPaintPropertyNode::State state;
-  state.local_transform_space = &t0();
-  state.clip_rect = FloatRoundedRect(FloatRect(0, 0, 500, 500));
-  state.clip_path = base::AdoptRef(path);
-  auto clip = ClipPaintPropertyNode::Create(c0(), std::move(state));
-
-  PropertyTreeState local_state(*transform, *clip, e0());
-  PropertyTreeState ancestor_state = PropertyTreeState::Root();
-
-  EXPECT_TRUE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(30, 30)));
-
-  EXPECT_TRUE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(11, 11)));
-
-  EXPECT_FALSE(GeometryMapper::PointVisibleInAncestorSpace(
-      local_state, ancestor_state, FloatPoint(5, 5)));
-}
-
 TEST_P(GeometryMapperTest, Precision) {
   auto t1 = CreateTransform(t0(), TransformationMatrix().Scale(32767));
   auto t2 = CreateTransform(*t1, TransformationMatrix().Rotate(1));