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