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

chrome/browser/browsing_data/browsing_data_file_system_helper_unittest.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 "testing/gtest/include/gtest/gtest.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file_util.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 69 matching lines @@
     return profile_.get();
   }
 
   // Blocks on the current MessageLoop until Notify() is called.
   void BlockUntilNotified() {
     base::MessageLoop::current()->Run();
   }
 
   // Unblocks the current MessageLoop. Should be called in response to some sort
   // of async activity in a callback method.
-  void Notify() {
-    base::MessageLoop::current()->Quit();
-  }
+  void Notify() { base::MessageLoop::current()->QuitWhenIdle(); }
 
   // Callback that should be executed in response to
   // storage::FileSystemContext::OpenFileSystem.
   void OpenFileSystemCallback(const GURL& root,
                               const std::string& name,
                               base::File::Error error) {
     open_file_system_result_ = error;
     Notify();
   }
 
@@ skipping 194 matching lines @@
 // extension and devtools schemes.
 TEST_F(BrowsingDataFileSystemHelperTest, IgnoreExtensionsAndDevTools) {
   ASSERT_TRUE(canned_helper_->empty());
   canned_helper_->AddFileSystem(kOriginExt, kTemporary, 0);
   ASSERT_TRUE(canned_helper_->empty());
   canned_helper_->AddFileSystem(kOriginDevTools, kTemporary, 0);
   ASSERT_TRUE(canned_helper_->empty());
 }
 
 }  // namespace