Remove #pragma once from chrome/browser/extensions

chrome/browser/extensions/extension_icon_manager.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_EXTENSIONS_EXTENSION_ICON_MANAGER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_ICON_MANAGER_H_
-#pragma once
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "chrome/browser/extensions/image_loading_tracker.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/insets.h"
 
@@ skipping 49 matching lines @@
   // If true, we will desaturate the icons to make them monochromatic.
   bool monochrome_;
 
   // Specifies the amount of empty padding to place around the icon.
   gfx::Insets padding_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionIconManager);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_ICON_MANAGER_H_