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

cc/test/animation_test_common.h

Index: cc/test/animation_test_common.h
diff --git a/cc/test/animation_test_common.h b/cc/test/animation_test_common.h
index 19e7a7c24953b6609d9e21956fc367b5fb0aeb97..afccc9df337df7342e0fd5f48fb54351beb8d846 100644
--- a/cc/test/animation_test_common.h
+++ b/cc/test/animation_test_common.h
@@ -260,10 +260,9 @@ int AddOpacityTransitionToLayerWithPlayer(
     float end_opacity,
     bool use_timing_function);
 
-void AbortAnimationsOnLayerWithPlayer(
-    int layer_id,
-    scoped_refptr<AnimationTimeline> timeline,
-    Animation::TargetProperty target_property);
+void AbortAnimationsOnLayerWithPlayer(int layer_id,
+                                      scoped_refptr<AnimationTimeline> timeline,
+                                      AnimationTargetProperty target_property);
 
 }  // namespace cc