Remove hit-testing-only RSLL entries

As of https://codereview.chromium.org/266913021/ we no longer hit test
via the RSLL; we walk the tree instead. This means we can remove the
machinery added to allow hidden layers to appear in the RSLL for hit
testing purposes.

This is essentially a revert of https://codereview.chromium.org/25712004

R=danakj@chromium.org
BUG=None

Review URL: https://codereview.chromium.org/289973003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@270742 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 104 deletions

diff --git a/cc/trees/layer_tree_impl_unittest.cc b/cc/trees/layer_tree_impl_unittest.cc
index b27a06e..4a8259e 100644
--- a/cc/trees/layer_tree_impl_unittest.cc
+++ b/cc/trees/layer_tree_impl_unittest.cc
@@ -1185,110 +1185,6 @@ TEST_F(LayerTreeImplTest, HitTestingForMultipleLayerLists) {
   EXPECT_EQ(4, result_layer->id());
 }
 
-TEST_F(LayerTreeImplTest, HitTestingForEmptyLayers) {
-  // Layer 1 - root
-  scoped_ptr<LayerImpl> root = LayerImpl::Create(host_impl().active_tree(), 1);
-  gfx::Transform identity_matrix;
-  gfx::PointF anchor;
-  gfx::PointF position;
-  gfx::Size bounds(100, 100);
-  SetLayerPropertiesForTesting(
-      root.get(), identity_matrix, anchor, position, bounds, true, false);
-  root->SetDrawsContent(true);
-
-  {
-    // Layer 2 - empty: drawsContent=false
-    gfx::PointF position(10.f, 10.f);
-    gfx::Size bounds(30, 30);
-    scoped_ptr<LayerImpl> empty_layer =
-        LayerImpl::Create(host_impl().active_tree(), 2);
-    SetLayerPropertiesForTesting(empty_layer.get(),
-                                 identity_matrix,
-                                 anchor,
-                                 position,
-                                 bounds,
-                                 true,
-                                 false);
-
-    empty_layer->SetDrawsContent(false);
-    root->AddChild(empty_layer.Pass());
-  }
-
-  {
-    // Layer 3 - empty, but has touch handler
-    gfx::PointF position(10.f, 60.f);
-    gfx::Size bounds(30, 30);
-    scoped_ptr<LayerImpl> test_layer =
-        LayerImpl::Create(host_impl().active_tree(), 3);
-    SetLayerPropertiesForTesting(test_layer.get(),
-                                 identity_matrix,
-                                 anchor,
-                                 position,
-                                 bounds,
-                                 true,
-                                 false);
-
-    test_layer->SetDrawsContent(false);
-    Region touch_handler_region(gfx::Rect(10, 10, 10, 10));
-    test_layer->SetTouchEventHandlerRegion(touch_handler_region);
-    root->AddChild(test_layer.Pass());
-  }
-
-  {
-    // Layer 4 - empty, but has mousewheel handler
-    gfx::PointF position(60.f, 60.f);
-    gfx::Size bounds(30, 30);
-    scoped_ptr<LayerImpl> test_layer =
-        LayerImpl::Create(host_impl().active_tree(), 4);
-    SetLayerPropertiesForTesting(test_layer.get(),
-                                 identity_matrix,
-                                 anchor,
-                                 position,
-                                 bounds,
-                                 true,
-                                 false);
-
-    test_layer->SetDrawsContent(false);
-    test_layer->SetHaveWheelEventHandlers(true);
-    root->AddChild(test_layer.Pass());
-  }
-
-  host_impl().SetViewportSize(root->bounds());
-  host_impl().active_tree()->SetRootLayer(root.Pass());
-  host_impl().active_tree()->UpdateDrawProperties();
-
-  // Verify that the root layer and empty layers with touch/wheel handlers
-  // (but not the empty layer without a touch handler) are in the RSSL.
-  ASSERT_EQ(1u, RenderSurfaceLayerList().size());
-  EXPECT_EQ(1, RenderSurfaceLayerList()[0]->id());
-  ASSERT_EQ(3u, root_layer()->render_surface()->layer_list().size());
-  EXPECT_EQ(1, root_layer()->render_surface()->layer_list().at(0)->id());
-  EXPECT_EQ(3, root_layer()->render_surface()->layer_list().at(1)->id());
-  EXPECT_EQ(4, root_layer()->render_surface()->layer_list().at(2)->id());
-
-  // Hit testing for a point inside the empty no-handlers layer should return
-  // the root layer.
-  gfx::Point test_point = gfx::Point(15, 15);
-  LayerImpl* result_layer =
-      host_impl().active_tree()->FindLayerThatIsHitByPoint(test_point);
-  ASSERT_TRUE(result_layer);
-  EXPECT_EQ(1, result_layer->id());
-
-  // Hit testing for a point inside the touch handler layer should return it.
-  test_point = gfx::Point(15, 75);
-  result_layer =
-      host_impl().active_tree()->FindLayerThatIsHitByPoint(test_point);
-  ASSERT_TRUE(result_layer);
-  EXPECT_EQ(3, result_layer->id());
-
-  // Hit testing for a point inside the mousewheel layer should return it.
-  test_point = gfx::Point(75, 75);
-  result_layer =
-      host_impl().active_tree()->FindLayerThatIsHitByPoint(test_point);
-  ASSERT_TRUE(result_layer);
-  EXPECT_EQ(4, result_layer->id());
-}
-
 TEST_F(LayerTreeImplTest, HitCheckingTouchHandlerRegionsForSingleLayer) {
   scoped_ptr<LayerImpl> root =
       LayerImpl::Create(host_impl().active_tree(), 12345);