[Android] Java Bridge with Gin: implement Java Bridge dispatcher

content/renderer/java/gin_java_bridge_dispatcher.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_JAVA_GIN_JAVA_BRIDGE_DISPATCHER_H_
 #define CONTENT_RENDERER_JAVA_GIN_JAVA_BRIDGE_DISPATCHER_H_
 
 #include <map>
 #include <set>
 
@@ skipping 32 matching lines @@
   virtual ~GinJavaBridgeDispatcher();
 
   // RenderFrameObserver override:
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void DidClearWindowObject() OVERRIDE;
 
   void GetJavaMethods(ObjectID object_id, std::set<std::string>* methods);
   bool HasJavaMethod(ObjectID object_id, const std::string& method_name);
   scoped_ptr<base::Value> InvokeJavaMethod(ObjectID object_id,
                                            const std::string& method_name,
-                                           const base::ListValue& arguments);
+                                           const base::ListValue& arguments,
+                                           std::string* error_message);
   GinJavaBridgeObject* GetObject(ObjectID object_id);
   void OnGinJavaBridgeObjectDeleted(ObjectID object_id);
 
  private:
   void OnAddNamedObject(const std::string& name,
                         ObjectID object_id);
   void OnRemoveNamedObject(const std::string& name);
   void OnSetAllowObjectContentsInspection(bool allow);
 
   typedef std::map<std::string, ObjectID> NamedObjectMap;
   NamedObjectMap named_objects_;
   ObjectMap objects_;
   bool inside_did_clear_window_object_;
 
   DISALLOW_COPY_AND_ASSIGN(GinJavaBridgeDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_JAVA_GIN_JAVA_BRIDGE_DISPATCHER_H_