Remove parts of //cc we aren't using

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"
-#include "cc/base/cc_export.h"
-#include "cc/output/filter_operations.h"
-#include "ui/gfx/transform.h"
-
-namespace cc {
-
-struct CC_EXPORT AnimationEvent {
-  enum Type { STARTED, FINISHED, ABORTED, PROPERTY_UPDATE };
-
-  AnimationEvent(Type type,
-                 int layer_id,
-                 int group_id,
-                 Animation::TargetProperty target_property,
-                 base::TimeTicks monotonic_time);
-
-  Type type;
-  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;
-
-}  // namespace cc
-
-#endif  // CC_ANIMATION_ANIMATION_EVENTS_H_