Fix crash when programatically closing media gallery dialog

chrome/browser/media_gallery/media_galleries_dialog_controller_mock.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_MEDIA_GALLERY_MEDIA_GALLERIES_DIALOG_CONTROLLER_MOCK_H_
 #define CHROME_BROWSER_MEDIA_GALLERY_MEDIA_GALLERIES_DIALOG_CONTROLLER_MOCK_H_
 
 #include "chrome/browser/media_gallery/media_galleries_dialog_controller.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace chrome {
 
 class MediaGalleriesDialogControllerMock
     : public MediaGalleriesDialogController {
  public:
   MediaGalleriesDialogControllerMock();
   virtual ~MediaGalleriesDialogControllerMock();
 
   MOCK_CONST_METHOD0(GetHeader, string16());
   MOCK_CONST_METHOD0(GetSubtext, string16());
   MOCK_CONST_METHOD0(HasPermittedGalleries, bool());
   MOCK_CONST_METHOD0(permissions, const KnownGalleryPermissions&());
+  MOCK_CONST_METHOD0(web_contents, content::WebContents*());
 
   MOCK_METHOD0(OnAddFolderClicked, void());
   MOCK_METHOD2(DidToggleGallery, void(const MediaGalleryPrefInfo* pref_info,
                                       bool enabled));
+  MOCK_METHOD1(DialogFinished, void(bool));
 };
 
 }  // namespace
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERY_MEDIA_GALLERIES_DIALOG_CONTROLLER_MOCK_H_