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

chrome/browser/apps/ephemeral_app_launcher_browsertest.cc

 // Copyright 2014 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/thread_task_runner_handle.h"
 #include "chrome/browser/apps/ephemeral_app_launcher.h"
 #include "chrome/browser/apps/ephemeral_app_service.h"
 #include "chrome/browser/extensions/extension_install_checker.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/install_tracker.h"
@@ skipping 132 matching lines @@
   webstore_install::Result result() const { return result_; }
   const std::string& error() const { return error_; }
 
   void OnLaunchCallback(webstore_install::Result result,
                         const std::string& error) {
     result_ = result;
     error_ = error;
     done_ = true;
     if (waiting_) {
       waiting_ = false;
-      base::MessageLoopForUI::current()->Quit();
+      base::MessageLoopForUI::current()->QuitWhenIdle();
     }
   }
 
   void Wait() {
     if (done_)
       return;
 
     waiting_ = true;
     content::RunMessageLoop();
   }
@@ skipping 390 matching lines @@
 }
 
 // Verifies that a launch will fail if a duplicate launch is in progress.
 IN_PROC_BROWSER_TEST_F(EphemeralAppLauncherTest, DuplicateLaunchInProgress) {
   extensions::ActiveInstallData install_data(kDefaultAppId);
   install_data.is_ephemeral = true;
   InstallTracker::Get(profile())->AddActiveInstall(install_data);
 
   RunLaunchTest(kDefaultAppId, webstore_install::LAUNCH_IN_PROGRESS, false);
 }