screenshot disabling policy

chrome/browser/extensions/api/tabs/tabs.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_API_TABS_TABS_H__
 #define CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_H__
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/extensions/extension_function.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "googleurl/src/gurl.h"
 
 class BackingStore;
 class GURL;
+class PrefService;
 class SkBitmap;
 class TabContents;
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace content {
 class WebContents;
 }
@@ skipping 128 matching lines @@
 
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
   void GotLanguage(const std::string& language);
   content::NotificationRegistrar registrar_;
   DECLARE_EXTENSION_FUNCTION_NAME("tabs.detectLanguage")
 };
 class CaptureVisibleTabFunction : public AsyncExtensionFunction,
                                   public content::NotificationObserver {
+ public:
+  static void RegisterUserPrefs(PrefService* service);
+
  protected:
   enum ImageFormat {
     FORMAT_JPEG,
     FORMAT_PNG
   };
 
   // The default quality setting used when encoding jpegs.
   static const int kDefaultQuality;
 
   virtual ~CaptureVisibleTabFunction() {}
@@ skipping 14 matching lines @@
   // The format (JPEG vs PNG) of the resulting image.  Set in RunImpl().
   ImageFormat image_format_;
 
   // Quality setting to use when encoding jpegs.  Set in RunImpl().
   int image_quality_;
 
   DECLARE_EXTENSION_FUNCTION_NAME("tabs.captureVisibleTab")
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_H__