Enable AutoResize for Constrained Web Dialogs for Mac.

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"
 #include "base/message_loop/message_loop.h"
@@ skipping 48 matching lines @@
   registrar_.Add(this, chrome::NOTIFICATION_COLLECTED_COOKIES_SHOWN,
                  content::Source<TabSpecificContentSettings>(content_settings));
 
   sheet_controller_.reset([[CollectedCookiesWindowController alloc]
       initWithWebContents:web_contents
       collectedCookiesMac:this]);
 
   base::scoped_nsobject<CustomConstrainedWindowSheet> sheet(
       [[CustomConstrainedWindowSheet alloc]
           initWithCustomWindow:[sheet_controller_ window]]);
-  window_.reset(new ConstrainedWindowMac(
-      this, web_contents, sheet));
+  window_.reset(CreateAndShowWebModalDialogMac(this, web_contents, sheet));
 }
 
 CollectedCookiesMac::~CollectedCookiesMac() {
 }
 
 void CollectedCookiesMac::Observe(int type,
                                   const content::NotificationSource& source,
                                   const content::NotificationDetails& details) {
   DCHECK(type == chrome::NOTIFICATION_COLLECTED_COOKIES_SHOWN);
   window_->CloseWebContentsModalDialog();
@@ skipping 426 matching lines @@
       treeController = blockedTreeController_;
       break;
     default:
       NOTREACHED();
       return;
   }
   [detailsViewController_ configureBindingsForTreeController:treeController];
 }
 
 @end