Add CCDelegatingRenderer, and corresponding IPCs

cc/CCDelegatedRendererLayerImpl.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 CCDelegatedRendererLayerImpl_h
 #define CCDelegatedRendererLayerImpl_h
 
 #include "CCLayerImpl.h"
 #include "cc/scoped_ptr_vector.h"
 
@@ skipping 12 matching lines @@
     void clearRenderPasses();
 
     virtual void didLoseContext() OVERRIDE;
 
     virtual CCRenderPass::Id firstContributingRenderPassId() const OVERRIDE;
     virtual CCRenderPass::Id nextContributingRenderPassId(CCRenderPass::Id) const OVERRIDE;
 
     void appendContributingRenderPasses(CCRenderPassSink&);
     virtual void appendQuads(CCQuadSink&, CCAppendQuadsData&) OVERRIDE;
 
+    void createChild();
+    int childId() const { return m_childId; }
+
 private:
     explicit CCDelegatedRendererLayerImpl(int);
 
     CCRenderPass::Id convertDelegatedRenderPassId(CCRenderPass::Id delegatedRenderPassId) const;
 
     void appendRenderPassQuads(CCQuadSink&, CCAppendQuadsData&, CCRenderPass* fromDelegatedRenderPass) const;
 
     PassOwnPtr<CCDrawQuad> createCopyOfQuad(const CCDrawQuad*);
 
     virtual const char* layerTypeAsString() const OVERRIDE;
+    void clearChild();
 
     ScopedPtrVector<CCRenderPass> m_renderPassesInDrawOrder;
     base::hash_map<CCRenderPass::Id, int> m_renderPassesIndexById;
+    int m_childId;
 };
 
 }
 
 #endif // CCDelegatedRendererLayerImpl_h