EmptyString16     138 base/strings/string_util.h BASE_EXPORT const string16& EmptyString16();
EmptyString16     779 chrome/browser/background/background_contents_service.cc   return base::EmptyString16();
EmptyString16      59 extensions/browser/extension_error_test_util.cc                         base::EmptyString16(),
EmptyString16      60 extensions/browser/extension_error_test_util.cc                         base::EmptyString16()));