Remove TabContents from constrained windows.

chrome/browser/ui/cocoa/content_settings/collected_cookies_mac.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.
 
 #import "chrome/browser/ui/cocoa/content_settings/collected_cookies_mac.h"
 
 #include <vector>
 
 #include "base/mac/bundle_locations.h"
 #import "base/mac/mac_util.h"
@@ skipping 100 matching lines @@
   TabSpecificContentSettings* content_settings =
       TabSpecificContentSettings::FromWebContents(tab_contents->web_contents());
   registrar_.Add(this, chrome::NOTIFICATION_COLLECTED_COOKIES_SHOWN,
                  content::Source<TabSpecificContentSettings>(content_settings));
 
   sheet_controller_ = [[CollectedCookiesWindowController alloc]
       initWithTabContents:tab_contents];
 
   set_sheet([sheet_controller_ window]);
 
-  window_ = new ConstrainedWindowMac(tab_contents, this);
+  window_ = new ConstrainedWindowMac(tab_contents->web_contents(), this);
 }
 
 CollectedCookiesMac::~CollectedCookiesMac() {
   NSWindow* window = [sheet_controller_ window];
   if (window_ && window && is_sheet_open()) {
     window_ = NULL;
     [NSApp endSheet:window];
   }
 }
 
@@ skipping 409 matching lines @@
       treeController = blockedTreeController_;
       break;
     default:
       NOTREACHED();
       return;
   }
   [detailsViewController_ configureBindingsForTreeController:treeController];
 }
 
 @end