cc: Merge LayerTree into the LayerTreeHost.

cc/trees/layer_tree_host_common.h

 // 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.
 
 #ifndef CC_TREES_LAYER_TREE_HOST_COMMON_H_
 #define CC_TREES_LAYER_TREE_HOST_COMMON_H_
 
 #include <stddef.h>
 
 #include <limits>
@@ skipping 109 matching lines @@
 
   static int CalculateLayerJitter(LayerImpl* scrolling_layer);
   static void CalculateDrawPropertiesForTesting(
       CalcDrawPropsMainInputsForTesting* inputs);
 
   static void CalculateDrawProperties(CalcDrawPropsImplInputs* inputs);
   static void CalculateDrawPropertiesForTesting(
       CalcDrawPropsImplInputsForTesting* inputs);
 
   template <typename Function>
-  static void CallFunctionForEveryLayer(LayerTree* layer,
+  static void CallFunctionForEveryLayer(LayerTreeHost* host,
                                         const Function& function);
 
   template <typename Function>
   static void CallFunctionForEveryLayer(LayerTreeImpl* layer,
                                         const Function& function);
 
   struct CC_EXPORT ScrollUpdateInfo {
     int layer_id;
     // TODO(miletus): Use ScrollOffset once LayerTreeHost/Blink fully supports
     // fractional scroll offset.
@@ skipping 35 matching lines @@
   gfx::Vector2dF elastic_overscroll_delta;
   float top_controls_delta;
   std::vector<LayerTreeHostCommon::ScrollbarsUpdateInfo> scrollbars;
   std::vector<std::unique_ptr<SwapPromise>> swap_promises;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ScrollAndScaleSet);
 };
 
 template <typename Function>
-void LayerTreeHostCommon::CallFunctionForEveryLayer(LayerTree* host,
+void LayerTreeHostCommon::CallFunctionForEveryLayer(LayerTreeHost* host,
                                                     const Function& function) {
   for (auto* layer : *host) {
     function(layer);
     if (Layer* mask_layer = layer->mask_layer())
       function(mask_layer);
   }
 }
 
 template <typename Function>
 void LayerTreeHostCommon::CallFunctionForEveryLayer(LayerTreeImpl* tree_impl,
                                                     const Function& function) {
   for (auto* layer : *tree_impl)
     function(layer);
 
   for (int id : tree_impl->property_trees()->effect_tree.mask_layer_ids()) {
     function(tree_impl->LayerById(id));
   }
 }
 
 CC_EXPORT PropertyTrees* GetPropertyTrees(Layer* layer);
 CC_EXPORT PropertyTrees* GetPropertyTrees(LayerImpl* layer);
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_COMMON_H_