cc: Remove the LayerTreeHost abstraction.

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 1629 matching lines @@
   }
 
   void BeginTest() override {
     PostAddLongAnimationToMainThreadPlayer(player_.get());
   }
 
   void NotifyAnimationStarted(base::TimeTicks monotonic_time,
                               TargetProperty::Type target_property,
                               int group) override {
     called_animation_started_ = true;
-    layer_tree_host_in_process()->AnimateLayers(
-        base::TimeTicks::FromInternalValue(
-            std::numeric_limits<int64_t>::max()));
+    layer_tree_host()->AnimateLayers(base::TimeTicks::FromInternalValue(
+        std::numeric_limits<int64_t>::max()));
     PostSetNeedsCommitToMainThread();
   }
 
   void NotifyAnimationFinished(base::TimeTicks monotonic_time,
                                TargetProperty::Type target_property,
                                int group) override {
     called_animation_finished_ = true;
     EndTest();
   }
 
@@ skipping 199 matching lines @@
  private:
   scoped_refptr<Layer> layer_;
   FakeContentLayerClient client_;
 };
 
 MULTI_THREAD_TEST_F(
     LayerTreeHostAnimationTestRebuildPropertyTreesOnAnimationSetNeedsCommit);
 
 }  // namespace
 }  // namespace cc