Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/src/google/protobuf/compiler/java/java_service.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 56 matching lines @@
 
  protected:
   const ServiceDescriptor* descriptor_;
 
  private:
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ServiceGenerator);
 };
 
 class ImmutableServiceGenerator : public ServiceGenerator {
  public:
-  ImmutableServiceGenerator(const ServiceDescriptor* descriptor,
-                            Context* context);
+  explicit ImmutableServiceGenerator(const ServiceDescriptor* descriptor,
+                                     Context* context);
   virtual ~ImmutableServiceGenerator();
 
   virtual void Generate(io::Printer* printer);
 
  private:
 
   // Generate the getDescriptorForType() method.
   void GenerateGetDescriptorForType(io::Printer* printer);
 
   // Generate a Java interface for the service.
@@ skipping 26 matching lines @@
                                const MethodDescriptor* method,
                                IsAbstract is_abstract);
 
   // Generate a blocking stub interface and implementation of the service.
   void GenerateBlockingStub(io::Printer* printer);
 
   // Generate the method signature for one method of a blocking stub.
   void GenerateBlockingMethodSignature(io::Printer* printer,
                                        const MethodDescriptor* method);
 
-  // Return the output type of the method.
-  string GetOutput(const MethodDescriptor* method);
-
   Context* context_;
   ClassNameResolver* name_resolver_;
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ImmutableServiceGenerator);
 };
 
 }  // namespace java
 }  // namespace compiler
 }  // namespace protobuf
 
 #endif  // NET_PROTO2_COMPILER_JAVA_SERVICE_H__
 }  // namespace google