Remove #pragma once from chrome/browser/extensions

chrome/browser/extensions/platform_app_launcher.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_PLATFORM_APP_LAUNCHER_H_
 #define CHROME_BROWSER_EXTENSIONS_PLATFORM_APP_LAUNCHER_H_
-#pragma once
 
 class CommandLine;
 class Profile;
 
 namespace webkit_glue {
 struct WebIntentData;
 }
 
 namespace extensions {
 
@@ skipping 10 matching lines @@
 // appropriate launch data for the |web_intent_data| field present. |extension|
 // and |profile| must not be NULL.
 void LaunchPlatformAppWithWebIntent(
     Profile* profile,
     const Extension* extension,
     const webkit_glue::WebIntentData& web_intent_data);
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_PLATFORM_APP_LAUNCHER_H_