cc: DelegatedRendererLayer creates a ChildId with the ResourceProvider

cc/delegated_renderer_layer_impl.h

 // 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.
 
 #ifndef CC_DELEGATED_RENDERER_LAYER_IMPL_H_
 #define CC_DELEGATED_RENDERER_LAYER_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/cc_export.h"
 #include "cc/layer_impl.h"
@@ skipping 25 matching lines @@
   void ClearRenderPasses();
 
   // Set the size at which the frame should be displayed, with the origin at the
   // layer's origin. This must always contain at least the layer's bounds. A
   // value of (0, 0) implies that the frame should be displayed to fit exactly
   // in the layer's bounds.
   void set_display_size(gfx::Size size) { display_size_ = size; }
 
   void AppendContributingRenderPasses(RenderPassSink* render_pass_sink);
 
+  // Creates an ID with the resource provider for the child renderer
+  // that will be sending quads to the layer.
+  void CreateChildIdIfNeeded();
+  int child_id() const { return child_id_; }
+
  private:
   DelegatedRendererLayerImpl(LayerTreeImpl* tree_impl, int id);
 
+  void ClearChildId();
+
   RenderPass::Id ConvertDelegatedRenderPassId(
       RenderPass::Id delegated_render_pass_id) const;
 
   void AppendRenderPassQuads(
       QuadSink* quad_sink,
       AppendQuadsData* append_quads_data,
       const RenderPass* delegated_render_pass,
       gfx::Size frame_size) const;
 
   // LayerImpl overrides.
   virtual const char* layerTypeAsString() const OVERRIDE;
 
   ScopedPtrVector<RenderPass> render_passes_in_draw_order_;
   base::hash_map<RenderPass::Id, int> render_passes_index_by_id_;
   gfx::Size display_size_;
+  int child_id_;
 };
 
 }
 
 #endif  // CC_DELEGATED_RENDERER_LAYER_IMPL_H_