third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/src/google/protobuf/compiler/java/java_service.h

Index: third_party/protobuf/src/google/protobuf/compiler/java/java_service.h
diff --git a/third_party/protobuf/src/google/protobuf/compiler/java/java_service.h b/third_party/protobuf/src/google/protobuf/compiler/java/java_service.h
index 6707e821a9f2fb60766c8342b36929332a73a136..12b3f94266fffb0c110341e582c8d3b67275f1cb 100644
--- a/third_party/protobuf/src/google/protobuf/compiler/java/java_service.h
+++ b/third_party/protobuf/src/google/protobuf/compiler/java/java_service.h
@@ -74,8 +74,8 @@ class ServiceGenerator {
 
 class ImmutableServiceGenerator : public ServiceGenerator {
  public:
-  explicit ImmutableServiceGenerator(const ServiceDescriptor* descriptor,
-                                     Context* context);
+  ImmutableServiceGenerator(const ServiceDescriptor* descriptor,
+                            Context* context);
   virtual ~ImmutableServiceGenerator();
 
   virtual void Generate(io::Printer* printer);
@@ -122,6 +122,9 @@ class ImmutableServiceGenerator : public ServiceGenerator {
   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);