Remove MessageLoop::QuitTask() from base.

base/observer_list_unittest.cc

 // Copyright (c) 2011 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/observer_list.h"
 #include "base/observer_list_threadsafe.h"
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 124 matching lines @@
     if (do_notifies_) {
       list_->Notify(&Foo::Observe, 10);
     }
 
     loop_->PostTask(
         FROM_HERE,
         base::Bind(&AddRemoveThread::AddTask, weak_factory_.GetWeakPtr()));
   }
 
   void Quit() {
-    loop_->PostTask(FROM_HERE, new MessageLoop::QuitTask());
+    loop_->PostTask(FROM_HERE, MessageLoop::QuitClosure());
   }
 
   virtual void Observe(int x) {
     count_observes_++;
 
     // If we're getting called after we removed ourselves from
     // the list, that is very bad!
     DCHECK(in_list_);
 
     // This callback should fire on the appropriate thread
@@ skipping 371 matching lines @@
   ObserverList<Foo>* observer_list = new ObserverList<Foo>;
   ListDestructor a(observer_list);
   observer_list->AddObserver(&a);
 
   FOR_EACH_OBSERVER(Foo, *observer_list, Observe(0));
   // If this test fails, there'll be Valgrind errors when this function goes out
   // of scope.
 }
 
 }  // namespace