Remove #pragma once from chrome/browser/{printing,safe_browsing,prefs,bookmarks,autocomplete}

chrome/browser/prefs/pref_observer_mock.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.
 
 #ifndef CHROME_BROWSER_PREFS_PREF_OBSERVER_MOCK_H_
 #define CHROME_BROWSER_PREFS_PREF_OBSERVER_MOCK_H_
-#pragma once
 
 #include <string>
 
 #include "chrome/browser/prefs/pref_service.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
@@ skipping 27 matching lines @@
   MOCK_METHOD3(Observe, void(int type,
                              const content::NotificationSource& source,
                              const content::NotificationDetails& details));
 
   void Expect(const PrefService* prefs,
               const std::string& pref_name,
               const Value* value);
 };
 
 #endif  // CHROME_BROWSER_PREFS_PREF_OBSERVER_MOCK_H_