Convert JsonWriter::Write to taking a const ref for the in-param

ios/web/webui/web_ui_ios_impl.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 IOS_WEB_WEBUI_WEB_UI_IOS_IMPL_H_
 #define IOS_WEB_WEBUI_WEB_UI_IOS_IMPL_H_
 
 #include <map>
 
 #include "base/compiler_specific.h"
@@ skipping 34 matching lines @@
                               const base::Value& arg1,
                               const base::Value& arg2,
                               const base::Value& arg3) override;
   void CallJavascriptFunction(const std::string& function_name,
                               const base::Value& arg1,
                               const base::Value& arg2,
                               const base::Value& arg3,
                               const base::Value& arg4) override;
   void CallJavascriptFunction(
       const std::string& function_name,
-      const std::vector<const base::Value*>& args) override;
+      const std::vector<const base::Value&>& args) override;
 
  private:
   // Executes JavaScript asynchronously on the page.
   void ExecuteJavascript(const base::string16& javascript);
 
   // A map of message name -> message handling callback.
   typedef std::map<std::string, MessageCallback> MessageCallbackMap;
   MessageCallbackMap message_callbacks_;
 
   // The WebUIIOSMessageHandlers we own.
   ScopedVector<WebUIIOSMessageHandler> handlers_;
 
   // Non-owning pointer to the WebStateImpl this WebUIIOS is associated with.
   WebStateImpl* web_state_;
 
   scoped_ptr<WebUIIOSController> controller_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUIIOSImpl);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_WEBUI_WEB_UI_IOS_IMPL_H_