Simplify ppapi Graphics3D size propagation a bit

ppapi/shared_impl/ppb_graphics_3d_shared.cc

Index: ppapi/shared_impl/ppb_graphics_3d_shared.cc
diff --git a/ppapi/shared_impl/ppb_graphics_3d_shared.cc b/ppapi/shared_impl/ppb_graphics_3d_shared.cc
index 0c40b4cb53c53e589745ca1a12ef9fe2c566778a..4d3a4b0672df1a6585e7964196ddd7398d626d57 100644
--- a/ppapi/shared_impl/ppb_graphics_3d_shared.cc
+++ b/ppapi/shared_impl/ppb_graphics_3d_shared.cc
@@ -17,8 +17,9 @@ namespace ppapi {
 PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(PP_Instance instance)
     : Resource(OBJECT_IS_IMPL, instance) {}
 
-PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(const HostResource& host_resource)
-    : Resource(OBJECT_IS_PROXY, host_resource) {}
+PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(const HostResource& host_resource,
+                                             const gfx::Size& size)
+    : Resource(OBJECT_IS_PROXY, host_resource), size_(size) {}
 
 PPB_Graphics3D_Shared::~PPB_Graphics3D_Shared() {
   // Make sure that GLES2 implementation has already been destroyed.
@@ -51,22 +52,20 @@ int32_t PPB_Graphics3D_Shared::ResizeBuffers(int32_t width, int32_t height) {
     return PP_ERROR_BADARGUMENT;
 
   gles2_impl()->ResizeCHROMIUM(width, height, 1.f, true);
-  width_ = width;
-  height_ = height;
+  size_ = gfx::Size(width, height);
   // TODO(alokp): Check if resize succeeded and return appropriate error code.
   return PP_OK;
 }
 
 int32_t PPB_Graphics3D_Shared::SwapBuffers(
     scoped_refptr<TrackedCallback> callback) {
-  return SwapBuffersWithSyncToken(callback, gpu::SyncToken(), width_, height_);
+  return SwapBuffersWithSyncToken(callback, gpu::SyncToken(), size_);
 }
 
 int32_t PPB_Graphics3D_Shared::SwapBuffersWithSyncToken(
     scoped_refptr<TrackedCallback> callback,
     const gpu::SyncToken& sync_token,
-    int32_t width,
-    int32_t height) {
+    const gfx::Size& size) {
   if (HasPendingSwap()) {
     Log(PP_LOGLEVEL_ERROR,
         "PPB_Graphics3D.SwapBuffers: Plugin attempted swap "
@@ -76,7 +75,7 @@ int32_t PPB_Graphics3D_Shared::SwapBuffersWithSyncToken(
   }
 
   swap_callback_ = callback;
-  return DoSwapBuffers(sync_token, width, height);
+  return DoSwapBuffers(sync_token, size);
 }
 
 int32_t PPB_Graphics3D_Shared::GetAttribMaxValue(int32_t attribute,