Add Query() support to FileRef

ppapi/cpp/file_ref.cc

Index: ppapi/cpp/file_ref.cc
diff --git a/ppapi/cpp/file_ref.cc b/ppapi/cpp/file_ref.cc
index fbfd49b489b3723a25e76eafca9a8331688cf1ab..ac2490c3990c5101504374f3e72d60bd94e2cbf7 100644
--- a/ppapi/cpp/file_ref.cc
+++ b/ppapi/cpp/file_ref.cc
@@ -18,6 +18,10 @@ template <> const char* interface_name<PPB_FileRef_1_0>() {
   return PPB_FILEREF_INTERFACE_1_0;
 }
 
+template <> const char* interface_name<PPB_FileRef_1_1>() {
+  return PPB_FILEREF_INTERFACE_1_1;
+}
+
 }  // namespace
 
 FileRef::FileRef(PP_Resource resource) : Resource(resource) {
@@ -109,4 +113,12 @@ int32_t FileRef::Rename(const FileRef& new_file_ref,
       pp_resource(), new_file_ref.pp_resource(), cc.pp_completion_callback());
 }
 
+int32_t FileRef::Query(const CompletionCallbackWithOutput<PP_FileInfo>& cc) {
+  if (!has_interface<PPB_FileRef_1_1>())
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
+  return get_interface<PPB_FileRef_1_1>()->Query(
+      pp_resource(), cc.output(), cc.pp_completion_callback());
+}
+
+
 }  // namespace pp