[StorageMonitor] Move gallery name generation to StorageInfo.

chrome/browser/storage_monitor/media_storage_util.h

Index: chrome/browser/storage_monitor/media_storage_util.h
diff --git a/chrome/browser/storage_monitor/media_storage_util.h b/chrome/browser/storage_monitor/media_storage_util.h
index baa1b19be7db923166a195f4cdd304ea19137971..6f1a5bbdcf3c140badfd4586373b34f54b5740b2 100644
--- a/chrome/browser/storage_monitor/media_storage_util.h
+++ b/chrome/browser/storage_monitor/media_storage_util.h
@@ -43,6 +43,11 @@ class MediaStorageUtil {
                                     StorageInfo* device_info,
                                     base::FilePath* relative_path);
 
+  // Get a display name for the given |absolute_path|.
+  // Return empty string if there is no corresponding storage device.
+  static string16 GetGalleryDisplayNameFromPath(
+      const base::FilePath& absolute_path);
+
   // Get a base::FilePath for the given |device_id|.  If the device isn't a mass
   // storage type, the base::FilePath will be empty.  This does not check that
   // the device is connected.