CC Animation: Replace AnimiationEventsVector with AnimiationEvents class.

cc/trees/layer_tree_host.h

Index: cc/trees/layer_tree_host.h
diff --git a/cc/trees/layer_tree_host.h b/cc/trees/layer_tree_host.h
index f7bd43368c3abde927cf59c358cf6ea2273b141b..2cab8aed688d6dcb6e054fa98f00093138999ff1 100644
--- a/cc/trees/layer_tree_host.h
+++ b/cc/trees/layer_tree_host.h
@@ -20,7 +20,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
-#include "cc/animation/animation_events.h"
+#include "cc/animation/animation.h"
 #include "cc/base/cc_export.h"
 #include "cc/debug/frame_timing_tracker.h"
 #include "cc/debug/micro_benchmark.h"
@@ -51,6 +51,8 @@ class GpuMemoryBufferManager;
 }
 
 namespace cc {
+
+class AnimationEvents;
 class AnimationRegistrar;
 class AnimationHost;
 class BeginFrameSource;
@@ -179,7 +181,7 @@ class CC_EXPORT LayerTreeHost : public MutatorHostClient {
 
   void SetNextCommitForcesRedraw();
 
-  void SetAnimationEvents(scoped_ptr<AnimationEventsVector> events);
+  void SetAnimationEvents(scoped_ptr<AnimationEvents> events);
 
   void SetRootLayer(scoped_refptr<Layer> root_layer);
   Layer* root_layer() { return root_layer_.get(); }