Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/conformance/conformance_test_runner.cc

Index: third_party/protobuf/conformance/conformance_test_runner.cc
diff --git a/third_party/protobuf/conformance/conformance_test_runner.cc b/third_party/protobuf/conformance/conformance_test_runner.cc
index 7e91d388b0d6ebf884971add99f43e1dc58de4d2..376a60b9aa6edf1ff9e459ab0f83815a1ad36ee8 100644
--- a/third_party/protobuf/conformance/conformance_test_runner.cc
+++ b/third_party/protobuf/conformance/conformance_test_runner.cc
@@ -251,16 +251,6 @@ void UsageError() {
           "                              should contain one test name per\n");
   fprintf(stderr,
           "                              line.  Use '#' for comments.\n");
-  fprintf(stderr,
-          "  --enforce_recommended       Enforce that recommended test\n");
-  fprintf(stderr,
-          "                              cases are also passing. Specify\n");
-  fprintf(stderr,
-          "                              this flag if you want to be\n");
-  fprintf(stderr,
-          "                              strictly conforming to protobuf\n");
-  fprintf(stderr,
-          "                              spec.\n");
   exit(1);
 }
 
@@ -290,18 +280,14 @@ int main(int argc, char *argv[]) {
   char *program;
   google::protobuf::ConformanceTestSuite suite;
 
-  string failure_list_filename;
   vector<string> failure_list;
 
   for (int arg = 1; arg < argc; ++arg) {
     if (strcmp(argv[arg], "--failure_list") == 0) {
       if (++arg == argc) UsageError();
-      failure_list_filename = argv[arg];
       ParseFailureList(argv[arg], &failure_list);
     } else if (strcmp(argv[arg], "--verbose") == 0) {
       suite.SetVerbose(true);
-    } else if (strcmp(argv[arg], "--enforce_recommended") == 0) {
-      suite.SetEnforceRecommended(true);
     } else if (argv[arg][0] == '-') {
       fprintf(stderr, "Unknown option: %s\n", argv[arg]);
       UsageError();
@@ -314,7 +300,7 @@ int main(int argc, char *argv[]) {
     }
   }
 
-  suite.SetFailureList(failure_list_filename, failure_list);
+  suite.SetFailureList(failure_list);
   ForkPipeRunner runner(program);
 
   std::string output;