text: // Copyright 2013 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_PRINTING_PRINTING_UI_WEB_CONTENTS_OBSERVER_H_
  #define CHROME_BROWSER_PRINTING_PRINTING_UI_WEB_CONTENTS_OBSERVER_H_
  
  #include "base/basictypes.h"
  #include "content/public/browser/web_contents_observer.h"
  #include "ui/gfx/native_widget_types.h"
  
  // Wrapper used to keep track of the lifetime of a WebContents.
  // Lives on the UI thread.
  class PrintingUIWebContentsObserver : public content::WebContentsObserver {
   public:
    explicit PrintingUIWebContentsObserver(content::WebContents* web_contents);
  
    // Return the parent NativeView of the observed WebContents.
    gfx::NativeView GetParentView();
  
   private:
    DISALLOW_COPY_AND_ASSIGN(PrintingUIWebContentsObserver);
  };
  
  #endif  // CHROME_BROWSER_PRINTING_PRINTING_UI_WEB_CONTENTS_OBSERVER_H_
  