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

cc/animation/animation_host.h

Index: cc/animation/animation_host.h
diff --git a/cc/animation/animation_host.h b/cc/animation/animation_host.h
index 2cddf6a0d4e169355e8a554091bc32ed47d6ad45..5b5248949eca9d6ec110581cccc758aa6eea7103 100644
--- a/cc/animation/animation_host.h
+++ b/cc/animation/animation_host.h
@@ -110,9 +110,8 @@ class CC_EXPORT AnimationHost {
   bool HasPotentiallyRunningTransformAnimation(int layer_id,
                                                LayerTreeType tree_type) const;
 
-  bool HasAnyAnimationTargetingProperty(
-      int layer_id,
-      Animation::TargetProperty property) const;
+  bool HasAnyAnimationTargetingProperty(int layer_id,
+                                        AnimationTargetProperty property) const;
 
   bool FilterIsAnimatingOnImplOnly(int layer_id) const;
   bool OpacityIsAnimatingOnImplOnly(int layer_id) const;