Use gfx::NativeView rather than gfx::NativeWindow to identify web contents modal dialogs

chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.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 CHROME_BROWSER_UI_COCOA_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_MAC_
 #define CHROME_BROWSER_UI_COCOA_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_MAC_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_nsobject.h"
@@ skipping 25 matching lines @@
       content::WebContents* web_contents,
       id<ConstrainedWindowSheet> sheet);
   virtual ~ConstrainedWindowMac();
 
   // WebContentsModalDialog implementation.
   virtual void ShowWebContentsModalDialog() OVERRIDE;
   // Closes the constrained window and deletes this instance.
   virtual void CloseWebContentsModalDialog() OVERRIDE;
   virtual void FocusWebContentsModalDialog() OVERRIDE;
   virtual void PulseWebContentsModalDialog() OVERRIDE;
-  virtual gfx::NativeWindow GetNativeWindow() OVERRIDE;
+  virtual gfx::NativeView GetNativeView() OVERRIDE;
 
   // content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
  private:
   // Gets the parent window of the dialog.
   NSWindow* GetParentWindow() const;
 
   ConstrainedWindowMacDelegate* delegate_;  // weak, owns us.
 
   // The WebContents that owns and constrains this WebContentsModalDialog. Weak.
   content::WebContents* web_contents_;
 
   scoped_nsprotocol<id<ConstrainedWindowSheet>> sheet_;
 
+  scoped_nsobject<NSView> dummyView_;
+
   // A scoped container for notification registries.
   content::NotificationRegistrar registrar_;
 
   // This is true if the constrained window is waiting to be shown.
   bool pending_show_;
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_MAC_