Eliminate implicit conversion from scoped_refptr<T> to T*

webkit/plugins/ppapi/ppb_image_data_impl.cc

Index: webkit/plugins/ppapi/ppb_image_data_impl.cc
diff --git a/webkit/plugins/ppapi/ppb_image_data_impl.cc b/webkit/plugins/ppapi/ppb_image_data_impl.cc
index fa3060178e0402ee261dc64ab091da15242d6cb5..d844c13058c340b479c261cef6f08152c221bd8f 100644
--- a/webkit/plugins/ppapi/ppb_image_data_impl.cc
+++ b/webkit/plugins/ppapi/ppb_image_data_impl.cc
@@ -121,7 +121,7 @@ const SkBitmap* PPB_ImageData_Impl::GetMappedBitmap() const {
   return &skia::GetTopDevice(*mapped_canvas_)->accessBitmap(false);
 }
 
-void PPB_ImageData_Impl::Swap(PPB_ImageData_Impl* other) {
+void PPB_ImageData_Impl::Swap(scoped_refptr<PPB_ImageData_Impl> other) {
   swap(other->platform_image_, platform_image_);
   swap(other->mapped_canvas_, mapped_canvas_);
   std::swap(other->format_, format_);