Simplify ppapi Graphics3D size propagation a bit

ppapi/proxy/ppb_graphics_3d_proxy.h

Index: ppapi/proxy/ppb_graphics_3d_proxy.h
diff --git a/ppapi/proxy/ppb_graphics_3d_proxy.h b/ppapi/proxy/ppb_graphics_3d_proxy.h
index 2ae06e9f064bcdc7293dfb4640f970945a517f4d..54c4c7a75f98b4ee92f500d1b144922f416ee749 100644
--- a/ppapi/proxy/ppb_graphics_3d_proxy.h
+++ b/ppapi/proxy/ppb_graphics_3d_proxy.h
@@ -39,7 +39,7 @@ class PpapiCommandBufferProxy;
 
 class PPAPI_PROXY_EXPORT Graphics3D : public PPB_Graphics3D_Shared {
  public:
-  explicit Graphics3D(const HostResource& resource);
+  Graphics3D(const HostResource& resource, const gfx::Size& size);
   ~Graphics3D() override;
 
   bool Init(gpu::gles2::GLES2Implementation* share_gles2,
@@ -65,8 +65,7 @@ class PPAPI_PROXY_EXPORT Graphics3D : public PPB_Graphics3D_Shared {
   gpu::CommandBuffer* GetCommandBuffer() override;
   gpu::GpuControl* GetGpuControl() override;
   int32_t DoSwapBuffers(const gpu::SyncToken& sync_token,
-                        int32_t width,
-                        int32_t height) override;
+                        const gfx::Size& size) override;
 
   std::unique_ptr<PpapiCommandBufferProxy> command_buffer_;
 
@@ -116,8 +115,7 @@ class PPB_Graphics3D_Proxy : public InterfaceProxy {
   void OnMsgDestroyTransferBuffer(const HostResource& context, int32_t id);
   void OnMsgSwapBuffers(const HostResource& context,
                         const gpu::SyncToken& sync_token,
-                        int32_t width,
-                        int32_t height);
+                        const gfx::Size& size);
   void OnMsgTakeFrontBuffer(const HostResource& context);
   void OnMsgEnsureWorkVisible(const HostResource& context);
   // Renderer->plugin message handlers.