cc: LayerTreeHostImpl uses element id to tick animations

cc/input/scrollbar_animation_controller_unittest.cc

 // Copyright 2013 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 "cc/input/scrollbar_animation_controller.h"
 
 #include "cc/layers/solid_color_scrollbar_layer_impl.h"
 #include "cc/test/fake_impl_task_runner_provider.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/geometry_test_utils.h"
@@ skipping 1125 matching lines @@
   bool did_request_animate_;
 };
 
 class VerticalScrollbarAnimationControllerAndroidTest
     : public ScrollbarAnimationControllerAndroidTest {
  protected:
   ScrollbarOrientation orientation() const override { return VERTICAL; }
 };
 
 TEST_F(ScrollbarAnimationControllerAndroidTest, DelayAnimationOnResize) {
-  scrollbar_layer_->layer_tree_impl()
-      ->property_trees()
-      ->effect_tree.OnOpacityAnimated(0.0f,
-                                      scrollbar_layer_->effect_tree_index(),
-                                      scrollbar_layer_->layer_tree_impl());
+  scrollbar_layer_->SetOverlayScrollbarLayerOpacityAnimated(0.f);
   scrollbar_controller_->DidScrollBegin();
   scrollbar_controller_->DidScrollUpdate(true);
   scrollbar_controller_->DidScrollEnd();
   // Normal Animation delay of 2 seconds.
   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->Opacity());
   EXPECT_EQ(delay_, base::TimeDelta::FromSeconds(2));
 
-  scrollbar_layer_->layer_tree_impl()
-      ->property_trees()
-      ->effect_tree.OnOpacityAnimated(0.0f,
-                                      scrollbar_layer_->effect_tree_index(),
-                                      scrollbar_layer_->layer_tree_impl());
+  scrollbar_layer_->SetOverlayScrollbarLayerOpacityAnimated(0.f);
   scrollbar_controller_->DidScrollUpdate(true);
   // Delay animation on resize to 5 seconds.
   EXPECT_FLOAT_EQ(1.0f, scrollbar_layer_->Opacity());
   EXPECT_EQ(delay_, base::TimeDelta::FromSeconds(5));
 }
 
 TEST_F(ScrollbarAnimationControllerAndroidTest, HiddenInBegin) {
-  scrollbar_layer_->layer_tree_impl()
-      ->property_trees()
-      ->effect_tree.OnOpacityAnimated(0.0f,
-                                      scrollbar_layer_->effect_tree_index(),
-                                      scrollbar_layer_->layer_tree_impl());
+  scrollbar_layer_->SetOverlayScrollbarLayerOpacityAnimated(0.f);
   scrollbar_controller_->Animate(base::TimeTicks());
   EXPECT_FLOAT_EQ(0.0f, scrollbar_layer_->Opacity());
 }
 
 TEST_F(ScrollbarAnimationControllerAndroidTest,
        HiddenAfterNonScrollingGesture) {
-  scrollbar_layer_->layer_tree_impl()
-      ->property_trees()
-      ->effect_tree.OnOpacityAnimated(0.0f,
-                                      scrollbar_layer_->effect_tree_index(),
-                                      scrollbar_layer_->layer_tree_impl());
+  scrollbar_layer_->SetOverlayScrollbarLayerOpacityAnimated(0.f);
   scrollbar_controller_->DidScrollBegin();
 
   base::TimeTicks time;
   time += base::TimeDelta::FromSeconds(100);
   scrollbar_controller_->Animate(time);
   EXPECT_FLOAT_EQ(0.0f, scrollbar_layer_->Opacity());
   scrollbar_controller_->DidScrollEnd();
 
   EXPECT_TRUE(start_fade_.Equals(base::Closure()));
 
@@ skipping 344 matching lines @@
   EXPECT_FLOAT_EQ(1, scrollbar_layer_->Opacity());
 
   time += base::TimeDelta::FromSeconds(1);
   scrollbar_controller_->DidScrollEnd();
   EXPECT_FALSE(did_request_animate_);
   EXPECT_FLOAT_EQ(1, scrollbar_layer_->Opacity());
 }
 
 }  // namespace
 }  // namespace cc