Made desktop capture screen tab-constrained in ASH

chrome/browser/ui/cocoa/media_picker/desktop_media_picker_cocoa.h

 // Copyright 2013 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_BROWSER_UI_COCOA_MEDIA_PICKER_DESKTOP_MEDIA_PICKER_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_MEDIA_PICKER_DESKTOP_MEDIA_PICKER_COCOA_H_
 
 #import "base/mac/scoped_nsobject.h"
 #include "chrome/browser/media/desktop_media_picker.h"
 
 @class DesktopMediaPickerController;
 
 // Cocoa's DesktopMediaPicker implementation.
 class DesktopMediaPickerCocoa : public DesktopMediaPicker {
  public:
   DesktopMediaPickerCocoa();
   virtual ~DesktopMediaPickerCocoa();
 
   // Overridden from DesktopMediaPicker:
-  virtual void Show(gfx::NativeWindow context,
+  virtual void Show(content::WebContents* web_contents,
+                    gfx::NativeWindow context,
                     gfx::NativeWindow parent,
                     const base::string16& app_name,
                     const base::string16& target_name,
                     scoped_ptr<DesktopMediaList> media_list,
                     const DoneCallback& done_callback) OVERRIDE;
 
  private:
   base::scoped_nsobject<DesktopMediaPickerController> controller_;
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_MEDIA_PICKER_DESKTOP_MEDIA_PICKER_COCOA_H_