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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_PUBLIC_BROWSER_ANDROID_LAYER_TREE_BUILD_HELPER_H_
      6 #define CONTENT_PUBLIC_BROWSER_ANDROID_LAYER_TREE_BUILD_HELPER_H_
      7 
      8 #include "base/memory/ref_counted.h"
      9 
     10 namespace cc {
     11 class Layer;
     12 }
     13 
     14 namespace content {
     15 
     16 // A Helper class to build a layer tree to be composited
     17 // given a content root layer.
     18 class LayerTreeBuildHelper {
     19  public:
     20   LayerTreeBuildHelper() {};
     21   virtual scoped_refptr<cc::Layer> GetLayerTree(
     22       scoped_refptr<cc::Layer> content_root_layer) = 0;
     23   virtual ~LayerTreeBuildHelper() {};
     24 
     25  private:
     26   DISALLOW_COPY_AND_ASSIGN(LayerTreeBuildHelper);
     27 };
     28 
     29 }
     30 
     31 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_LAYER_TREE_BUILD_HELPER_H_
     32