Convert devtools interfaces over to using WebString....

chrome/renderer/devtools_agent.h

 // Copyright (c) 2009 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 CHROME_RENDERER_DEVTOOLS_AGENT_H_
 #define CHROME_RENDERER_DEVTOOLS_AGENT_H_
 
 #include <map>
 #include <string>
 
@@ skipping 14 matching lines @@
  public:
   DevToolsAgent(int routing_id, RenderView* view);
   virtual ~DevToolsAgent();
 
   void OnNavigate();
 
   // IPC message interceptor. Called on the Render thread.
   virtual bool OnMessageReceived(const IPC::Message& message);
 
   // WebDevToolsAgentDelegate implementation
-  virtual void SendMessageToClient(const std::string& class_name,
-                                   const std::string& method_name,
-                                   const std::string& param1,
-                                   const std::string& param2,
-                                   const std::string& param3);
+  virtual void SendMessageToClient(const WebKit::WebString& class_name,
+                                   const WebKit::WebString& method_name,
+                                   const WebKit::WebString& param1,
+                                   const WebKit::WebString& param2,
+                                   const WebKit::WebString& param3);
   virtual int GetHostId();
   virtual void ForceRepaint();
 
   // Returns agent instance for its host id.
   static DevToolsAgent* FromHostId(int host_id);
 
   RenderView* render_view() { return view_; }
 
   WebDevToolsAgent* GetWebAgent();
 
@@ skipping 12 matching lines @@
 
   static std::map<int, DevToolsAgent*> agent_for_routing_id_;
 
   int routing_id_; //  View routing id that we can access from IO thread.
   RenderView* view_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsAgent);
 };
 
 #endif  // CHROME_RENDERER_DEVTOOLS_AGENT_H_