[DevTools] Use device metrics emulation implemented in content.

public/web/WebViewClient.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 134 matching lines @@
     // This method enumerates all the files in the path. It returns immediately
     // and asynchronously invokes the WebFileChooserCompletion with all the
     // files in the directory. Returns false if the WebFileChooserCompletion
     // will never be called.
     virtual bool enumerateChosenDirectory(const WebString& path, WebFileChooserCompletion*) { return false; }
 
     // Creates the main WebFrame for the specified WebHelperPlugin.
     // Called by WebHelperPlugin to provide the WebFrameClient interface for the WebFrame.
     virtual void initializeHelperPluginWebFrame(WebHelperPlugin*) { }
 
+    // Called to emulate device. Window should occupy the whole device screen,

[pfeldman, 2013/09/19 12:46:05]

// Called to emulate device dimensions and scale factor. Window should ... Also
explain what fitToView means.

[dgozman, 2013/09/19 13:59:38]

Done.

+    // while the view should be located at |viewRect|.
+    virtual void emulateDevice(
+        bool enabled, const WebSize& deviceSize, const WebRect& viewRect,

[apavlov, 2013/09/19 12:47:57]

perhaps, deviceSize -> screenSize?

[dgozman, 2013/09/19 13:59:38]

Done.

+        float deviceScaleFactor, bool fitToView) { }
 
     // Navigational --------------------------------------------------------
 
     // These notifications bracket any loading that occurs in the WebView.
     virtual void didStartLoading() { }
     virtual void didStopLoading() { }
 
     // Notification that some progress was made loading the current page.
     // loadProgress is a value between 0 (nothing loaded) and 1.0 (frame fully
     // loaded).
@@ skipping 233 matching lines @@
     // Informs the browser that the draggable regions have been updated.
     virtual void draggableRegionsChanged() { }
 
 protected:
     ~WebViewClient() { }
 };
 
 } // namespace WebKit
 
 #endif