Simplify ppapi Graphics3D size propagation a bit

ppapi/thunk/ppb_graphics_3d_api.h

 // Copyright (c) 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 PPAPI_THUNK_PPB_GRAPHICS_3D_API_H_
 #define PPAPI_THUNK_PPB_GRAPHICS_3D_API_H_
 
 #include <stdint.h>
 
 #include "base/memory/ref_counted.h"
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "ppapi/c/dev/ppb_gles_chromium_texture_mapping_dev.h"
 #include "ppapi/c/ppb_graphics_3d.h"
 #include "ppapi/thunk/ppapi_thunk_export.h"
 
+namespace gfx {
+class Size;
+}
+
 namespace gpu {
 struct SyncToken;
 }
 
 namespace ppapi {
 
 class TrackedCallback;
 
 namespace thunk {
 
 class PPAPI_THUNK_EXPORT PPB_Graphics3D_API {
  public:
   virtual ~PPB_Graphics3D_API() {}
 
   // Graphics3D API.
   virtual int32_t GetAttribs(int32_t attrib_list[]) = 0;
   virtual int32_t SetAttribs(const int32_t attrib_list[]) = 0;
   virtual int32_t GetError() = 0;
   virtual int32_t ResizeBuffers(int32_t width, int32_t height) = 0;
   virtual int32_t SwapBuffers(scoped_refptr<TrackedCallback> callback) = 0;
   virtual int32_t SwapBuffersWithSyncToken(
       scoped_refptr<TrackedCallback> callback,
       const gpu::SyncToken& sync_token,
-      int32_t width,
-      int32_t height) = 0;
+      const gfx::Size& size) = 0;
   virtual int32_t GetAttribMaxValue(int32_t attribute, int32_t* value) = 0;
 
   // Graphics3DTrusted API.
   virtual PP_Bool SetGetBuffer(int32_t shm_id) = 0;
   virtual scoped_refptr<gpu::Buffer> CreateTransferBuffer(uint32_t size,
                                                           int32_t* id) = 0;
   virtual PP_Bool DestroyTransferBuffer(int32_t id) = 0;
   virtual PP_Bool Flush(int32_t put_offset) = 0;
   virtual gpu::CommandBuffer::State WaitForTokenInRange(int32_t start,
                                                         int32_t end) = 0;
@@ skipping 13 matching lines @@
   virtual void UnmapTexSubImage2DCHROMIUM(const void* mem) = 0;
 
   virtual void EnsureWorkVisible() = 0;
   virtual void TakeFrontBuffer() = 0;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_PPB_GRAPHICS_3D_API_H_