Revert "third_party/protobuf: Update to HEAD (83d681ee2c)"

third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_source_generator_base.h

 // 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 32 matching lines @@
 struct Options;
 
 class SourceGeneratorBase {
  protected:
   SourceGeneratorBase(const FileDescriptor* descriptor, const Options* options);
   virtual ~SourceGeneratorBase();
 
   std::string class_access_level();
   const Options* options();
 
-  // Write any attributes used to decorate generated function members (methods and properties).
-  // Should not be used to decorate types.
   void WriteGeneratedCodeAttributes(io::Printer* printer);
 
  private:
   const FileDescriptor* descriptor_;
   const Options *options_;
 
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(SourceGeneratorBase);
 };
 
 }  // namespace csharp
 }  // namespace compiler
 }  // namespace protobuf
 }  // namespace google
 
 #endif  // GOOGLE_PROTOBUF_COMPILER_CSHARP_SOURCE_GENERATOR_BASE_H__