Remove #pragma once from jingle

jingle/notifier/base/fake_base_task.h

 // 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.
 //
 // A stand-in for stuff that expects a weak pointer to a BaseTask for
 // testing.
 
 #ifndef JINGLE_NOTIFIER_FAKE_XMPP_CLIENT_H_
 #define JINGLE_NOTIFIER_FAKE_XMPP_CLIENT_H_
-#pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "jingle/notifier/base/task_pump.h"
 
 namespace buzz {
 class XmppTaskParentInterface;
 }  // namespace buzz
 
 namespace notifier {
 
 class FakeBaseTask {
  public:
   FakeBaseTask();
   ~FakeBaseTask();
 
   base::WeakPtr<buzz::XmppTaskParentInterface> AsWeakPtr();
 
  private:
   notifier::TaskPump task_pump_;
   base::WeakPtr<buzz::XmppTaskParentInterface> base_task_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeBaseTask);
 };
 
 }  // namespace notifier
 
 #endif  // JINGLE_NOTIFIER_FAKE_XMPP_CLIENT_H_