Remove #pragma once from content

content/public/browser/color_chooser.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 CONTENT_PUBLIC_BROWSER_COLOR_CHOOSER_H_
 #define CONTENT_PUBLIC_BROWSER_COLOR_CHOOSER_H_
-#pragma once
 
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace content {
 
 class RenderViewHost;
 class WebContents;
 
 // Abstraction object for color choosers for each platform.
 class ColorChooser {
@@ skipping 20 matching lines @@
   // Sets the selected color.
   virtual void SetSelectedColor(SkColor color) = 0;
 
 private:
   int identifier_;
 };
 
 }
 
 #endif  // CONTENT_PUBLIC_BROWSER_COLOR_CHOOSER_H_