AsPPB_MessageLoop_API   32 ppapi/proxy/ppb_message_loop_proxy.h   virtual thunk::PPB_MessageLoop_API* AsPPB_MessageLoop_API() OVERRIDE;
AsPPB_MessageLoop_API  234 ppapi/shared_impl/resource_tracker.cc   const bool is_message_loop = (object->AsPPB_MessageLoop_API() != NULL);