Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.cc

 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
 // https://developers.google.com/protocol-buffers/
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
@@ skipping 45 matching lines @@
   }
 }
 
 ExtensionGenerator::~ExtensionGenerator() {}
 
 void ExtensionGenerator::GenerateMembersHeader(io::Printer* printer) {
   map<string, string> vars;
   vars["method_name"] = method_name_;
   SourceLocation location;
   if (descriptor_->GetSourceLocation(&location)) {
-    vars["comments"] = BuildCommentsString(location, true);
+    vars["comments"] = BuildCommentsString(location);
   } else {
     vars["comments"] = "";
   }
-  // Unlike normal message fields, check if the file for the extension was
-  // deprecated.
-  vars["deprecated_attribute"] = GetOptionalDeprecatedAttribute(descriptor_, descriptor_->file());
   printer->Print(vars,
                  "$comments$"
-                 "+ (GPBExtensionDescriptor *)$method_name$$deprecated_attribute$;\n");
+                 "+ (GPBExtensionDescriptor *)$method_name$;\n");
 }
 
 void ExtensionGenerator::GenerateStaticVariablesInitialization(
     io::Printer* printer) {
   map<string, string> vars;
   vars["root_class_and_method_name"] = root_class_and_method_name_;
   vars["extended_type"] = ClassName(descriptor_->containing_type());
   vars["number"] = SimpleItoa(descriptor_->number());
 
   std::vector<string> options;
   if (descriptor_->is_repeated()) options.push_back("GPBExtensionRepeated");
   if (descriptor_->is_packed()) options.push_back("GPBExtensionPacked");
   if (descriptor_->containing_type()->options().message_set_wire_format())
     options.push_back("GPBExtensionSetWireFormat");
 
-  vars["options"] = BuildFlagsString(FLAGTYPE_EXTENSION, options);
+  vars["options"] = BuildFlagsString(options);
 
   ObjectiveCType objc_type = GetObjectiveCType(descriptor_);
   string singular_type;
   if (objc_type == OBJECTIVECTYPE_MESSAGE) {
     vars["type"] = string("GPBStringifySymbol(") +
                    ClassName(descriptor_->message_type()) + ")";
   } else {
     vars["type"] = "NULL";
   }
 
@@ skipping 28 matching lines @@
 
 void ExtensionGenerator::GenerateRegistrationSource(io::Printer* printer) {
   printer->Print(
       "[registry addExtension:$root_class_and_method_name$];\n",
       "root_class_and_method_name", root_class_and_method_name_);
 }
 }  // namespace objectivec
 }  // namespace compiler
 }  // namespace protobuf
 }  // namespace google