Remove remaining calls to deprecated MessageLoop methods on 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"
 #include "base/strings/sys_string_conversions.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/cookie_settings_factory.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/profiles/profile.h"
 #import "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_sheet.h"
 #import "chrome/browser/ui/cocoa/content_settings/cookie_details_view_controller.h"
 #import "chrome/browser/ui/cocoa/vertical_gradient_view.h"
 #include "chrome/browser/ui/collected_cookies_infobar_delegate.h"
 #include "chrome/common/pref_names.h"
@@ skipping 56 matching lines @@
   DCHECK_EQ(chrome::NOTIFICATION_COLLECTED_COOKIES_SHOWN, type);
   window_->CloseWebContentsModalDialog();
 }
 
 void CollectedCookiesMac::PerformClose() {
   window_->CloseWebContentsModalDialog();
 }
 
 void CollectedCookiesMac::OnConstrainedWindowClosed(
     ConstrainedWindowMac* window) {
-  base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
+  base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, this);
 }
 
 #pragma mark Window Controller
 
 @interface CollectedCookiesWindowController (Private)
 - (void)showInfoBarForDomain:(const base::string16&)domain
                      setting:(ContentSetting)setting;
 - (void)showInfoBarForMultipleDomainsAndSetting:(ContentSetting)setting;
 - (void)animateInfoBar;
 @end
@@ skipping 407 matching lines @@
       treeController = blockedTreeController_;
       break;
     default:
       NOTREACHED();
       return;
   }
   [detailsViewController_ configureBindingsForTreeController:treeController];
 }
 
 @end