cc : Remove parent for mask and replica layers in LayerImpl

cc/trees/occlusion_tracker_unittest.cc

 // 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.
 
 #include "cc/trees/occlusion_tracker.h"
 
 #include <stddef.h>
 
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/base/math_util.h"
@@ skipping 280 matching lines @@
   void SetProperties(LayerImpl* layer,
                      const gfx::Transform& transform,
                      const gfx::PointF& position,
                      const gfx::Size& bounds) {
     layer->SetTransform(transform);
     layer->SetPosition(position);
     layer->SetBounds(bounds);
   }
 
   void SetReplica(LayerImpl* owning_layer, scoped_ptr<LayerImpl> layer) {
+    layer->SetParent(owning_layer);
     owning_layer->SetReplicaLayer(std::move(layer));
   }
 
   void SetMask(LayerImpl* owning_layer, scoped_ptr<LayerImpl> layer) {
     owning_layer->SetMaskLayer(std::move(layer));
   }
 
   bool opaque_layers_;
   FakeLayerTreeHostClient client_;
   TestTaskGraphRunner task_graph_runner_;
@@ skipping 2200 matching lines @@
     EXPECT_EQ(gfx::Rect(),
               occlusion.UnoccludedSurfaceContentRect(
                   surface, gfx::Rect(80, 70, 50, 50)));
   }
 };
 
 ALL_OCCLUSIONTRACKER_TEST(OcclusionTrackerTestUnoccludedSurfaceQuery)
 
 }  // namespace
 }  // namespace cc