Added PPB_Graphics3D_Dev::Resize to let plugins resize the backing surface.

ppapi/shared_impl/graphics_3d_impl.h

 // Copyright (c) 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 PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
 #define PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/thunk/ppb_graphics_3d_api.h"
 
 namespace gpu {
 class CommandBuffer;
 namespace gles2 {
 class GLES2CmdHelper;
 class GLES2Implementation;
 }  // namespace gles2
 }  // namespace gpu.
 
 namespace ppapi {
 
 class Graphics3DImpl : public thunk::PPB_Graphics3D_API {
  public:
   // PPB_Graphics3D_API implementation.
   virtual int32_t GetAttribs(int32_t* attrib_list) OVERRIDE;
   virtual int32_t SetAttribs(int32_t* attrib_list) OVERRIDE;
+  virtual int32_t Resize(int32_t width, int32_t height) OVERRIDE;
   virtual int32_t SwapBuffers(PP_CompletionCallback callback) OVERRIDE;
 
   gpu::gles2::GLES2Implementation* gles2_impl() {
     return gles2_impl_.get();
   }
 
   // Sends swap-buffers notification to the plugin.
   void SwapBuffersACK(int32_t pp_error);
 
  protected:
@@ skipping 16 matching lines @@
   // Callback that needs to be executed when swap-buffers is completed.
   PP_CompletionCallback swap_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(Graphics3DImpl);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_