cc : Remove parent for mask and replica layers in LayerImpl

cc/trees/layer_tree_host_common_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/layer_tree_host_common.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <set>
@@ skipping 802 matching lines @@
   SetLayerPropertiesForTesting(grand_child_of_rs2, layer_transform,
                                gfx::Point3F(2.5f, 0.f, 0.f), gfx::PointF(),
                                gfx::Size(10, 10), true, false, false);
   SetLayerPropertiesForTesting(replica_of_rs1.get(), replica_layer_transform,
                                gfx::Point3F(2.5f, 0.f, 0.f), gfx::PointF(),
                                gfx::Size(), true, false, false);
   SetLayerPropertiesForTesting(replica_of_rs2.get(), replica_layer_transform,
                                gfx::Point3F(2.5f, 0.f, 0.f), gfx::PointF(),
                                gfx::Size(), true, false, false);
 
+  replica_of_rs1->SetParent(render_surface1);
+  replica_of_rs2->SetParent(render_surface2);
   render_surface1->SetReplicaLayer(std::move(replica_of_rs1));
   render_surface2->SetReplicaLayer(std::move(replica_of_rs2));
   ExecuteCalculateDrawProperties(root);
 
   // Only layers that are associated with render surfaces should have an actual
   // RenderSurface() value.
   ASSERT_TRUE(root->render_surface());
   ASSERT_FALSE(child_of_root->render_surface());
   ASSERT_FALSE(grand_child_of_root->render_surface());
 
@@ skipping 4101 matching lines @@
                                true, true);
 
   gfx::Transform replica_transform;
   replica_transform.Scale(1.0, -1.0);
 
   scoped_ptr<LayerImpl> replica =
       LayerImpl::Create(host_impl()->active_tree(), 7);
   SetLayerPropertiesForTesting(replica.get(), replica_transform, gfx::Point3F(),
                                gfx::PointF(2.f, 2.f), gfx::Size(10, 10), false,
                                true, false);
+  replica->SetParent(child);
   child->SetReplicaLayer(std::move(replica));
 
   // This layer should end up in the same surface as child, with the same draw
   // and screen space transforms.
   LayerImpl* duplicate_child_non_owner = AddChild<LayerImpl>(child);
   duplicate_child_non_owner->SetDrawsContent(true);
   SetLayerPropertiesForTesting(duplicate_child_non_owner, identity_matrix,
                                gfx::Point3F(), gfx::PointF(), gfx::Size(10, 10),
                                false, true, false);
 
@@ skipping 4930 matching lines @@
   EXPECT_EQ(scroll_child6.id, grand_child10->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent3->scroll_tree_index());
   EXPECT_EQ(scroll_child7.id, child8->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent4->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, child9->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, grand_child12->scroll_tree_index());
 }
 
 }  // namespace
 }  // namespace cc