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

cc/layers/layer_unittest.cc

Index: cc/layers/layer_unittest.cc
diff --git a/cc/layers/layer_unittest.cc b/cc/layers/layer_unittest.cc
index f9904c0909196616d1b88478a99956f65ed7f667..5ade6f7397b6bcb9ee19d1cdd7abfe778d699ec1 100644
--- a/cc/layers/layer_unittest.cc
+++ b/cc/layers/layer_unittest.cc
@@ -1565,7 +1565,7 @@ TEST_F(LayerTest,
     AddAnimatedTransformToController(impl_layer->layer_animation_controller(),
                                      1.0, 0, 100);
     impl_layer->layer_animation_controller()
-        ->GetAnimation(Animation::TRANSFORM)
+        ->GetAnimation(AnimationTargetProperty::TRANSFORM)
         ->set_is_impl_only(true);
   }
   transform.Rotate(45.0);
@@ -1615,7 +1615,7 @@ TEST_F(LayerTest,
     AddOpacityTransitionToController(impl_layer->layer_animation_controller(),
                                      1.0, 0.3f, 0.7f, false);
     impl_layer->layer_animation_controller()
-        ->GetAnimation(Animation::OPACITY)
+        ->GetAnimation(AnimationTargetProperty::OPACITY)
         ->set_is_impl_only(true);
   }
   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetOpacity(0.75f));
@@ -1666,7 +1666,7 @@ TEST_F(LayerTest,
     AddAnimatedFilterToController(impl_layer->layer_animation_controller(), 1.0,
                                   1.f, 2.f);
     impl_layer->layer_animation_controller()
-        ->GetAnimation(Animation::FILTER)
+        ->GetAnimation(AnimationTargetProperty::FILTER)
         ->set_is_impl_only(true);
   }
   filters.Append(FilterOperation::CreateSepiaFilter(0.5f));
@@ -1999,8 +1999,8 @@ static bool AddTestAnimation(Layer* layer) {
   curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 0.3f, nullptr));
   curve->AddKeyframe(
       FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 0.7f, nullptr));
-  scoped_ptr<Animation> animation =
-      Animation::Create(std::move(curve), 0, 0, Animation::OPACITY);
+  scoped_ptr<Animation> animation = Animation::Create(
+      std::move(curve), 0, 0, AnimationTargetProperty::OPACITY);
 
   return layer->AddAnimation(std::move(animation));
 }