Do not use C++11 unicode escape in unittest.
For fixing MSVC
diff --git a/src/google/protobuf/util/internal/json_stream_parser_test.cc b/src/google/protobuf/util/internal/json_stream_parser_test.cc
index 4b69110..059ea6d 100644
--- a/src/google/protobuf/util/internal/json_stream_parser_test.cc
+++ b/src/google/protobuf/util/internal/json_stream_parser_test.cc
@@ -392,7 +392,7 @@
// - unicode UTF-16 surrogate pair handling in strings
TEST_F(JsonStreamParserTest, UnicodeSurrogatePairEscaping) {
StringPiece str =
- "[\"\\u0bee\\ud800\\uddf1\\uD80C\\uDDA4\\uD83d\\udC1D\U0001F36F\"]";
+ "[\"\\u0bee\\ud800\\uddf1\\uD80C\\uDDA4\\uD83d\\udC1D\\uD83C\\uDF6F\"]";
for (int i = 0; i <= str.length(); ++i) {
ow_.StartList("")
->RenderString("",