Change the media galleries permission dialog to have a suggestions section.

chrome/browser/media_galleries/media_galleries_permission_controller.h

 // Copyright 2014 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_GALLERIES_MEDIA_GALLERIES_PERMISSION_CONTROLLER_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_PERMISSION_CONTROLLER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 73 matching lines @@
       const extensions::Extension& extension,
       MediaGalleriesPreferences* preferences,
       const CreateDialogCallback& create_dialog_callback,
       const base::Closure& on_finish);
 
   virtual ~MediaGalleriesPermissionController();
 
  private:
   // This type keeps track of media galleries already known to the prefs system.
   typedef std::map<GalleryDialogId, Entry> GalleryPermissionsMap;
+  typedef std::map<GalleryDialogId, bool /*permitted*/> ToggledGalleryMap;
 
   class DialogIdMap {
    public:
     DialogIdMap();
     ~DialogIdMap();
     GalleryDialogId GetDialogId(MediaGalleryPrefId pref_id);
-    MediaGalleryPrefId GetPrefId(GalleryDialogId id);
+    MediaGalleryPrefId GetPrefId(GalleryDialogId id) const;
 
    private:
     GalleryDialogId next_dialog_id_;
     std::map<MediaGalleryPrefId, GalleryDialogId> back_map_;
     std::vector<MediaGalleryPrefId> forward_mapping_;
     DISALLOW_COPY_AND_ASSIGN(DialogIdMap);
   };
 
 
   // Bottom half of constructor -- called when |preferences_| is initialized.
@@ skipping 47 matching lines @@
 
   // Updates the model and view when |preferences_| changes. Some of the
   // possible changes includes a gallery getting blacklisted, or a new
   // auto detected gallery becoming available.
   void UpdateGalleriesOnPreferencesEvent();
 
   // Updates the model and view when a device is attached or detached.
   void UpdateGalleriesOnDeviceEvent(const std::string& device_id);
 
   GalleryDialogId GetDialogId(MediaGalleryPrefId pref_id);
-  MediaGalleryPrefId GetPrefId(GalleryDialogId id);
+  MediaGalleryPrefId GetPrefId(GalleryDialogId id) const;
 
   Profile* GetProfile();
 
   // The web contents from which the request originated.
   content::WebContents* web_contents_;
 
   // This is just a reference, but it's assumed that it won't become invalid
   // while the dialog is showing.
   const extensions::Extension* extension_;
 
   // Mapping between pref ids and dialog ids.
   DialogIdMap id_map_;
 
   // This map excludes those galleries which have been blacklisted; it only
   // counts active known galleries.
   GalleryPermissionsMap known_galleries_;
 
   // Galleries in |known_galleries_| that the user have toggled.
-  std::set<GalleryDialogId> toggled_galleries_;
+  ToggledGalleryMap toggled_galleries_;
+
+  // The current set of permitted galleries (according to prefs).
+  MediaGalleryPrefIdSet pref_permitted_galleries_;
 
   // Map of new galleries the user added, but have not saved. This list should
   // never overlap with |known_galleries_|.
   GalleryPermissionsMap new_galleries_;
 
   // Galleries in |known_galleries_| that the user has forgotten.
   std::set<GalleryDialogId> forgotten_galleries_;
 
   // Callback to run when the dialog closes.
   base::Closure on_finish_;
 
   // The model that tracks galleries and extensions' permissions.
   // This is the authoritative source for gallery information.
   MediaGalleriesPreferences* preferences_;
 
   // The view that's showing.
   scoped_ptr<MediaGalleriesDialog> dialog_;
 
   scoped_refptr<ui::SelectFileDialog> select_folder_dialog_;
 
   scoped_ptr<MediaGalleryContextMenu> context_menu_;
 
   // Creates the dialog. Only changed for unit tests.
   CreateDialogCallback create_dialog_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesPermissionController);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_PERMISSION_CONTROLLER_H_