cc: Move LayerImpl::AddChild and RemoveChild to LayerImplTestProperties

cc/layers/layer_impl.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/layers/layer_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 83 matching lines @@
   layer_tree_impl_->UnregisterScrollLayer(this);
   layer_tree_impl_->UnregisterLayer(this);
   layer_tree_impl_->RemoveLayerShouldPushProperties(this);
 
   layer_tree_impl_->RemoveFromElementMap(this);
 
   TRACE_EVENT_OBJECT_DELETED_WITH_ID(
       TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerImpl", this);
 }
 
-void LayerImpl::AddChild(std::unique_ptr<LayerImpl> child) {
-  child->test_properties()->parent = this;
-  DCHECK_EQ(layer_tree_impl(), child->layer_tree_impl());
-  test_properties()->children.push_back(child.get());
-  layer_tree_impl_->AddLayer(std::move(child));
-}
-
-std::unique_ptr<LayerImpl> LayerImpl::RemoveChildForTesting(LayerImpl* child) {
-  auto it = std::find(test_properties()->children.begin(),
-                      test_properties()->children.end(), child);
-  if (it != test_properties()->children.end())
-    test_properties()->children.erase(it);
-  layer_tree_impl()->property_trees()->RemoveIdFromIdToIndexMaps(child->id());
-  return layer_tree_impl_->RemoveLayer(child->id());
-}
-
 void LayerImpl::SetHasWillChangeTransformHint(bool has_will_change) {
   if (has_will_change_transform_hint_ == has_will_change)
     return;
   has_will_change_transform_hint_ = has_will_change;
   SetNeedsPushProperties();
 }
 
 void LayerImpl::SetDebugInfo(
     std::unique_ptr<base::trace_event::ConvertableToTraceFormat> debug_info) {
   owned_debug_info_ = std::move(debug_info);
@@ skipping 1134 matching lines @@
            .layer_transforms_should_scale_layer_contents) {
     return default_scale;
   }
 
   gfx::Vector2dF transform_scales = MathUtil::ComputeTransform2dScaleComponents(
       ScreenSpaceTransform(), default_scale);
   return std::max(transform_scales.x(), transform_scales.y());
 }
 
 }  // namespace cc