cc: Add zero-copy texture update support to delegating renderer.

cc/resources/resource_provider.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_RESOURCES_RESOURCE_PROVIDER_H_
 #define CC_RESOURCES_RESOURCE_PROVIDER_H_
 
 #include <deque>
 #include <set>
 #include <string>
@@ skipping 451 matching lines @@
     Normal,
     ForShutdown,
   };
   void DeleteResourceInternal(ResourceMap::iterator it, DeleteStyle style);
   void DeleteAndReturnUnusedResourcesToChild(ChildMap::iterator child_it,
                                              DeleteStyle style,
                                              const ResourceIdArray& unused);
   void DestroyChildInternal(ChildMap::iterator it, DeleteStyle style);
   void LazyCreate(Resource* resource);
   void LazyAllocate(Resource* resource);
+  void BindImageForSampling(Resource* resource);
 
   // Binds the given GL resource to a texture target for sampling using the
   // specified filter for both minification and magnification. Returns the
   // texture target used. The resource must be locked for reading.
   GLenum BindForSampling(ResourceProvider::ResourceId resource_id,
                          GLenum unit,
                          GLenum filter);
 
   // Returns NULL if the output_surface_ does not have a ContextProvider.
   gpu::gles2::GLES2Interface* ContextGL() const;
@@ skipping 69 matching lines @@
   return format_gl_data_format[format];
 }
 
 inline GLenum GLInternalFormat(ResourceFormat format) {
   return GLDataFormat(format);
 }
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_PROVIDER_H_