Media galleries preferences also needs to track file counts for scan results.

chrome/browser/media_galleries/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_GALLERIES_MEDIA_GALLERIES_PREFERENCES_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_PREFERENCES_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 86 matching lines @@
   // If the gallery is on a removable device, the time that device was last
   // attached. It is stored in preferences by the base::Time internal value,
   // which is microseconds since the epoch.
   base::Time last_attach_time;
 
   // Set to true if the volume metadata fields (volume_label, vendor_name,
   // model_name, total_size_in_bytes) were set. False if these fields were
   // never written.
   bool volume_metadata_valid;
 
+  // The following fields are populated with the image, music, and video file
+  // counts from the last scan if |type| is kScanResult. For files where it is
+  // hard to determine the exact type, the file should be counted in all
+  // possible counts.
+  int image_count;
+  int music_count;
+  int video_count;
+
   // 0 if the display_name is set externally and always used for display.
   // 1 if the display_name is only set externally when it is overriding
   // the name constructed from volume metadata.
   int prefs_version;
 
   // Called by views to provide details for the gallery permission entries.
   base::string16 GetGalleryDisplayName() const;
   base::string16 GetGalleryTooltip() const;
   base::string16 GetGalleryAdditionalDetails() const;
 
@@ skipping 79 matching lines @@
   // Teaches the registry about a new gallery. If the gallery is in a
   // blacklisted state, it is unblacklisted. |type| should not be a blacklisted
   // type. Returns the gallery's pref id.
   MediaGalleryPrefId AddGallery(const std::string& device_id,
                                 const base::FilePath& relative_path,
                                 MediaGalleryPrefInfo::Type type,
                                 const base::string16& volume_label,
                                 const base::string16& vendor_name,
                                 const base::string16& model_name,
                                 uint64 total_size_in_bytes,
-                                base::Time last_attach_time);
+                                base::Time last_attach_time,
+                                int image_count,

[Lei Zhang, 2014/01/15 22:13:43]

The number of parameters is too damn high!

+                                int music_count,
+                                int video_count);
 
   // Teach the registry about a gallery simply from the path. If the gallery is
   // in a blacklisted state, it is unblacklisted. |type| should not be a
   // blacklisted type. Returns the gallery's pref id.
   MediaGalleryPrefId AddGalleryByPath(const base::FilePath& path,
                                       MediaGalleryPrefInfo::Type type);
 
   // Removes the gallery identified by |id| from the store.
   void ForgetGalleryById(MediaGalleryPrefId id);
 
@@ skipping 54 matching lines @@
   MediaGalleryPrefId AddGalleryInternal(const std::string& device_id,
                                         const base::string16& display_name,
                                         const base::FilePath& relative_path,
                                         MediaGalleryPrefInfo::Type type,
                                         const base::string16& volume_label,
                                         const base::string16& vendor_name,
                                         const base::string16& model_name,
                                         uint64 total_size_in_bytes,
                                         base::Time last_attach_time,
                                         bool volume_metadata_valid,
+                                        int image_count,
+                                        int music_count,
+                                        int video_count,
                                         int prefs_version);
 
   // Sets permission for the media galleries identified by |gallery_id| for the
   // extension in the given |prefs|. Returns true only if anything changed.
   bool SetGalleryPermissionInPrefs(const std::string& extension_id,
                                    MediaGalleryPrefId gallery_id,
                                    bool has_access);
 
   // Removes the entry for the media galleries permissions identified by
   // |gallery_id| for the extension in the given |prefs|.
@@ skipping 38 matching lines @@
   DeviceIdPrefIdsMap device_map_;
 
   ObserverList<GalleryChangeObserver> gallery_change_observers_;
 
   base::WeakPtrFactory<MediaGalleriesPreferences> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesPreferences);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_PREFERENCES_H_