CC Animation: Replace AnimiationEventsVector with AnimiationEvents class.

cc/animation/animation_events.h

 // 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.
 
 #ifndef CC_ANIMATION_ANIMATION_EVENTS_H_
 #define CC_ANIMATION_ANIMATION_EVENTS_H_
 
 #include <vector>
 
 #include "cc/animation/animation.h"
@@ skipping 16 matching lines @@
   int layer_id;
   int group_id;
   Animation::TargetProperty target_property;
   base::TimeTicks monotonic_time;
   bool is_impl_only;
   float opacity;
   gfx::Transform transform;
   FilterOperations filters;
 };
 
-typedef std::vector<AnimationEvent> AnimationEventsVector;
+class CC_EXPORT AnimationEvents {
+ public:
+  AnimationEvents();
+  ~AnimationEvents();
+
+  std::vector<AnimationEvent> events_;
+};
 
 }  // namespace cc
 
 #endif  // CC_ANIMATION_ANIMATION_EVENTS_H_