Remove TabContents from constrained windows.

chrome/browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.mm

 // 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.
 
 #include "chrome/browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.h"
 
 #include "base/sys_string_conversions.h"
+#include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 const CGFloat kCheckboxMargin = 5;
 const CGFloat kCheckboxMaxWidth = 350;
 
 @interface MediaGalleriesCocoaController : NSObject {
  @private
   chrome::MediaGalleriesDialogCocoa* dialog_;
 }
@@ skipping 69 matching lines @@
   [alert_ setAccessoryView:checkbox_container_];
 
   // As a safeguard against the user skipping reading over the dialog and just
   // confirming, the button will be unavailable for dialogs without any checks
   // until the user toggles something.
   [[[alert_ buttons] objectAtIndex:0] setEnabled:
       controller_->HasPermittedGalleries()];
 
   set_sheet(alert_);
   // May be NULL during tests.
-  if (controller->tab_contents())
-    window_ = new ConstrainedWindowMac(controller->tab_contents(), this);
+  if (controller->tab_contents()) {
+    window_ = new ConstrainedWindowMac(
+        controller->tab_contents()->web_contents(), this);
+  }
 }
 
 MediaGalleriesDialogCocoa::~MediaGalleriesDialogCocoa() {
 }
 
 void MediaGalleriesDialogCocoa::OnAddFolderClicked() {
   controller_->OnAddFolderClicked();
 }
 
 void MediaGalleriesDialogCocoa::OnCheckboxToggled(NSButton* checkbox) {
@@ skipping 102 matching lines @@
 
 // static
 MediaGalleriesDialog* MediaGalleriesDialog::Create(
     MediaGalleriesDialogController* controller) {
   scoped_nsobject<MediaGalleriesCocoaController> cocoa_controller(
       [[MediaGalleriesCocoaController alloc] init]);
   return new MediaGalleriesDialogCocoa(controller, cocoa_controller);
 }
 
 }  // namespace chrome