CC Animation: Expose TargetProperty enum to be aliased in Blink Platform.

cc/animation/animation_delegate.h

Index: cc/animation/animation_delegate.h
diff --git a/cc/animation/animation_delegate.h b/cc/animation/animation_delegate.h
index 6064c7ebc83b03e7ed597a2ec09db52309020764..788283e0bbaea31c1bc883f16fb7509d9194a678 100644
--- a/cc/animation/animation_delegate.h
+++ b/cc/animation/animation_delegate.h
@@ -12,17 +12,19 @@ namespace cc {
 
 class CC_EXPORT AnimationDelegate {
  public:
-  virtual void NotifyAnimationStarted(base::TimeTicks monotonic_time,
-                                      Animation::TargetProperty target_property,
-                                      int group) = 0;
+  virtual void NotifyAnimationStarted(
+      base::TimeTicks monotonic_time,
+      AnimationTargetProperty::Enum target_property,
+      int group) = 0;
   virtual void NotifyAnimationFinished(
       base::TimeTicks monotonic_time,
-      Animation::TargetProperty target_property,
+      AnimationTargetProperty::Enum target_property,
       int group) = 0;
 
-  virtual void NotifyAnimationAborted(base::TimeTicks monotonic_time,
-                                      Animation::TargetProperty target_property,
-                                      int group) = 0;
+  virtual void NotifyAnimationAborted(
+      base::TimeTicks monotonic_time,
+      AnimationTargetProperty::Enum target_property,
+      int group) = 0;
 
  protected:
   virtual ~AnimationDelegate() {}