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

chrome/browser/extensions/extension_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 "chrome/browser/extensions/extension_browsertest.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 371 matching lines @@
 class MockAbortExtensionInstallPrompt : public ExtensionInstallPrompt {
  public:
   MockAbortExtensionInstallPrompt() : ExtensionInstallPrompt(NULL) {
   }
 
   // Simulate a user abort on an extension installation.
   void ConfirmInstall(Delegate* delegate,
                       const Extension* extension,
                       const ShowDialogCallback& show_dialog_callback) override {
     delegate->InstallUIAbort(true);
-    base::MessageLoopForUI::current()->Quit();
+    base::MessageLoopForUI::current()->QuitWhenIdle();
   }
 
   void OnInstallSuccess(const Extension* extension, SkBitmap* icon) override {}
 
   void OnInstallFailure(const extensions::CrxInstallError& error) override {}
 };
 
 class MockAutoConfirmExtensionInstallPrompt : public ExtensionInstallPrompt {
  public:
   explicit MockAutoConfirmExtensionInstallPrompt(
@@ skipping 279 matching lines @@
   return extensions::browsertest_util::ExecuteScriptInBackgroundPage(
       profile(), extension_id, script);
 }
 
 bool ExtensionBrowserTest::ExecuteScriptInBackgroundPageNoWait(
     const std::string& extension_id,
     const std::string& script) {
   return extensions::browsertest_util::ExecuteScriptInBackgroundPageNoWait(
       profile(), extension_id, script);
 }