Store Media gallery permissions in extension prefs.

chrome/browser/media_gallery/media_galleries_preferences.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_MEDIA_GALLERY_MEDIA_GALLERIES_PREFERENCES_H_
 #define CHROME_BROWSER_MEDIA_GALLERY_MEDIA_GALLERIES_PREFERENCES_H_
 
 #include <list>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/string16.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 
+class PrefService;
+class Profile;
+
 namespace base {
 class DictionaryValue;
 }
 
-class PrefService;
-class Profile;
+typedef uint64 MediaGalleryPrefId;
+
+struct MediaGalleryPermission {
+  MediaGalleryPrefId pref_id;
+  bool has_permission;
+};
 
 struct MediaGallery {
   MediaGallery();
   ~MediaGallery();
 
   // The ID that uniquely, persistently identifies the gallery.
   uint64 id;
 
   // The directory where the gallery is located, relative to the base path
   // for the device.
@@ skipping 46 matching lines @@
   Profile* profile_;
 
   // An in-memory cache of known galleries.
   // TODO(estade): either actually use this, or remove it.
   MediaGalleries remembered_galleries_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesPreferences);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERY_MEDIA_GALLERIES_PREFERENCES_H_