Don't use base::MessageLoop::{Quit,QuitClosure} in chrome/

chrome/browser/ui/webui/downloads_dom_handler_browsertest.cc

 // 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 "base/auto_reset.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/json/json_reader.h"
 #include "base/prefs/pref_service.h"
 #include "base/values.h"
 #include "chrome/browser/download/download_item_model.h"
@@ skipping 73 matching lines @@
   void reset_download_updated() { download_updated_.reset(); }
 
   using DownloadsDOMHandler::FinalizeRemovals;
 
  protected:
   content::WebContents* GetWebUIWebContents() override { return NULL; }
 
   void CallUpdateAll(const base::ListValue& list) override {
     downloads_list_.reset(list.DeepCopy());
     if (waiting_list_) {
-      content::BrowserThread::PostTask(content::BrowserThread::UI,
-                                       FROM_HERE,
-                                       base::MessageLoop::QuitClosure());
+      content::BrowserThread::PostTask(
+          content::BrowserThread::UI, FROM_HERE,
+          base::MessageLoop::QuitWhenIdleClosure());
     }
   }
 
   void CallUpdateItem(const base::DictionaryValue& item) override {
     download_updated_.reset(item.DeepCopy());
     if (waiting_updated_) {
-      content::BrowserThread::PostTask(content::BrowserThread::UI,
-                                       FROM_HERE,
-                                       base::MessageLoop::QuitClosure());
+      content::BrowserThread::PostTask(
+          content::BrowserThread::UI, FROM_HERE,
+          base::MessageLoop::QuitWhenIdleClosure());
     }
   }
 
  private:
   scoped_ptr<base::ListValue> downloads_list_;
   scoped_ptr<base::DictionaryValue> download_updated_;
   bool waiting_list_;
   bool waiting_updated_;
 
   DISALLOW_COPY_AND_ASSIGN(MockDownloadsDOMHandler);
@@ skipping 201 matching lines @@
 // TODO(benjhayden): Test incognito, both downloads_list() and that on-record
 // calls can't access off-record items.
 
 // TODO(benjhayden): Test that bad download ids incoming from the javascript are
 // dropped on the floor.
 
 // TODO(benjhayden): Test that IsTemporary() downloads are not shown.
 
 // TODO(benjhayden): Test that RemoveObserver is called on all download items,
 // including items that crossed IsTemporary() and back.