cc: Clean up LayerTreeTest and TestHooks.

cc/trees/layer_tree_host_unittest_animation.cc

 // Copyright 2012 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/trees/layer_tree_host.h"
 
 #include <stdint.h>
 
 #include "cc/animation/animation_curve.h"
 #include "cc/animation/animation_host.h"
@@ skipping 1160 matching lines @@
     // Add a translate from 6,7 to 8,9.
     TransformOperations start;
     start.AppendTranslate(6.f, 7.f, 0.f);
     TransformOperations end;
     end.AppendTranslate(8.f, 9.f, 0.f);
     AddAnimatedTransformToPlayer(player_.get(), 4.0, start, end);
 
     PostSetNeedsCommitToMainThread();
   }
 
-  void WillPrepareTiles(LayerTreeHostImpl* host_impl) override {
+  void WillPrepareTilesOnThread(LayerTreeHostImpl* host_impl) override {
     if (host_impl->sync_tree()->source_frame_number() != 0)
       return;
 
     // After checking this on the sync tree, we will activate, which will cause
     // PrepareTiles to happen again (which races with the test exiting).
     if (TestEnded())
       return;
 
     scoped_refptr<AnimationTimeline> timeline_impl =
         host_impl->animation_host()->GetTimelineById(timeline_id_);
@@ skipping 663 matching lines @@
  private:
   scoped_refptr<Layer> layer_;
   FakeContentLayerClient client_;
 };
 
 MULTI_THREAD_TEST_F(
     LayerTreeHostAnimationTestRebuildPropertyTreesOnAnimationSetNeedsCommit);
 
 }  // namespace
 }  // namespace cc