Implementation of device metrics emulation in render view.

content/renderer/devtools/devtools_agent.h

 // Copyright (c) 2012 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_DEVTOOLS_DEVTOOLS_AGENT_H_
 #define CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 35 matching lines @@
   virtual void sendMessageToInspectorFrontend(const WebKit::WebString& data);
 
   virtual int hostIdentifier();
   virtual void saveAgentRuntimeState(const WebKit::WebString& state);
   virtual WebKit::WebDevToolsAgentClient::WebKitClientMessageLoop*
       createClientMessageLoop();
   virtual void clearBrowserCache();
   virtual void clearBrowserCookies();
   virtual void visitAllocatedObjects(AllocatedObjectVisitor* visitor);
   virtual void setTraceEventCallback(TraceEventCallback cb);
+  virtual void emulateDevice(
+      bool enabled, const WebKit::WebSize& device_size,
+      const WebKit::WebRect& view_rect, float device_scale_factor,
+      bool fit_to_view);
 
   void OnAttach();
   void OnReattach(const std::string& agent_state);
   void OnDetach();
   void OnDispatchOnInspectorBackend(const std::string& message);
   void OnInspectElement(int x, int y);
   void OnAddMessageToConsole(ConsoleMessageLevel level,
                              const std::string& message);
   void ContinueProgram();
   void OnSetupDevToolsClient();
 
   bool is_attached_;
   bool is_devtools_client_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsAgent);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_H_