cc : Remove parent for mask and replica layers in LayerImpl

cc/trees/damage_tracker_unittest.cc

 // Copyright 2011 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/damage_tracker.h"
 
 #include <stddef.h>
 
 #include "cc/base/math_util.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 1374 matching lines @@
     scoped_ptr<LayerImpl> grand_child1_replica =
             LayerImpl::Create(host_impl_.active_tree(), 6);
     grand_child1_replica->SetPosition(gfx::PointF());
 
     // This is the anchor being tested.
     grand_child1_replica->SetTransformOrigin(
         gfx::Point3F(grand_child1->bounds().width(), 0.f, 0.f));
     gfx::Transform reflection;
     reflection.Scale3d(-1.0, 1.0, 1.0);
     grand_child1_replica->SetTransform(reflection);
+    // We need to set parent on replica layer for property tree building.
+    grand_child1_replica->SetParent(grand_child1);
     grand_child1->SetReplicaLayer(std::move(grand_child1_replica));
     grand_child1->SetForceRenderSurface(true);
   }
   LayerImpl* grand_child1_replica = grand_child1->replica_layer();
 
   // Set up the mask layer on the replica layer
   {
     scoped_ptr<LayerImpl> replica_mask_layer =
             LayerImpl::Create(host_impl_.active_tree(), 7);
     replica_mask_layer->SetPosition(gfx::PointF());
@@ skipping 152 matching lines @@
     gfx::Rect root_damage_rect =
         root->render_surface()->damage_tracker()->current_damage_rect();
     gfx::Rect damage_we_care_about = gfx::Rect(i, i);
     EXPECT_LE(damage_we_care_about.right(), root_damage_rect.right());
     EXPECT_LE(damage_we_care_about.bottom(), root_damage_rect.bottom());
   }
 }
 
 }  // namespace
 }  // namespace cc