cc: Move LayerImpl::AddChild and RemoveChild to LayerImplTestProperties

cc/layers/layer_utils_unittest.cc

 // Copyright 2014 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/layers/layer_utils.h"
 
 #include "cc/animation/animation_host.h"
 #include "cc/animation/animation_id_provider.h"
 #include "cc/animation/transform_operations.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 41 matching lines @@
   LayerImpl* great_grand_child() { return great_grand_child_; }
 
   scoped_refptr<AnimationTimeline> timeline() { return timeline_; }
   FakeLayerTreeHostImpl& host_impl() { return host_impl_; }
 
  private:
   static LayerImpl* CreateTwoForkTree(LayerTreeHostImpl* host_impl) {
     std::unique_ptr<LayerImpl> root =
         LayerImpl::Create(host_impl->active_tree(), 1);
     LayerImpl* root_ptr = root.get();
-    root->AddChild(LayerImpl::Create(host_impl->active_tree(), 2));
-    root->test_properties()->children[0]->AddChild(
+    root->test_properties()->AddChild(
+        LayerImpl::Create(host_impl->active_tree(), 2));
+    root->test_properties()->children[0]->test_properties()->AddChild(
         LayerImpl::Create(host_impl->active_tree(), 3));
-    root->AddChild(LayerImpl::Create(host_impl->active_tree(), 4));
-    root->test_properties()->children[1]->AddChild(
+    root->test_properties()->AddChild(
+        LayerImpl::Create(host_impl->active_tree(), 4));
+    root->test_properties()->children[1]->test_properties()->AddChild(
         LayerImpl::Create(host_impl->active_tree(), 5));
     root->test_properties()
         ->children[1]
         ->test_properties()
         ->children[0]
+        ->test_properties()
         ->AddChild(LayerImpl::Create(host_impl->active_tree(), 6));
     root->test_properties()
         ->children[1]
         ->test_properties()
         ->children[0]
         ->test_properties()
         ->children[0]
+        ->test_properties()
         ->AddChild(LayerImpl::Create(host_impl->active_tree(), 7));
     host_impl->active_tree()->SetRootLayer(std::move(root));
     return root_ptr;
   }
 
   FakeImplTaskRunnerProvider task_runner_provider_;
   TestSharedBitmapManager shared_bitmap_manager_;
   TestTaskGraphRunner task_graph_runner_;
   FakeLayerTreeHostImpl host_impl_;
   LayerImpl* root_;
@@ skipping 481 matching lines @@
   // Same as RotateXWithPerspectiveUnderAncestorsWithPositionOr2DTransform test,
   // except for the perspective calculations.
 
   gfx::BoxF expected(295.f, 180.f, -25.f, 50.f, 50.f, 50.f);
   EXPECT_BOXF_EQ(expected, box);
 }
 
 }  // namespace
 
 }  // namespace cc