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

chrome/browser/custom_handlers/protocol_handler_registry_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 "chrome/browser/custom_handlers/protocol_handler_registry.h"
 
 #include <set>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 188 matching lines @@
         delegate_(registry_delegate) {}
 
   void SetDefaultWebClientUIState(
       ShellIntegration::DefaultWebClientUIState state) override {
     ProtocolHandlerRegistry::DefaultClientObserver::SetDefaultWebClientUIState(
         state);
     if (state == ShellIntegration::STATE_IS_DEFAULT) {
       delegate_->FakeRegisterWithOS(worker_->protocol());
     }
     if (state != ShellIntegration::STATE_PROCESSING) {
-      base::MessageLoop::current()->Quit();
+      base::MessageLoop::current()->QuitWhenIdle();
     }
   }
 
  private:
   FakeDelegate* delegate_;
 };
 
 class FakeProtocolClientWorker
     : public ShellIntegration::DefaultProtocolClientWorker {
  public:
@@ skipping 911 matching lines @@
   // added to pref.
   ASSERT_EQ(InPrefIgnoredHandlerCount(), 2);
   ASSERT_EQ(InMemoryIgnoredHandlerCount(), 4);
 
   registry()->RemoveIgnoredHandler(p2u1);
 
   // p2u1 installed by user and policy, so it is removed from pref alone.
   ASSERT_EQ(InPrefIgnoredHandlerCount(), 1);
   ASSERT_EQ(InMemoryIgnoredHandlerCount(), 4);
 }