make media gallery directory tooltips in media gallery config dialog absolute paths

chrome/browser/media_gallery/media_file_system_registry.cc

 // 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.
 
 // MediaFileSystemRegistry implementation.
 
 #include "chrome/browser/media_gallery/media_file_system_registry.h"
 
 #include <set>
 #include <vector>
@@ skipping 93 matching lines @@
       PrefIdFsInfoMap::const_iterator existing_info = pref_id_map_.find(*id);
       if (existing_info != pref_id_map_.end()) {
         result.push_back(existing_info->second);
         continue;
       }
       const MediaGalleryPrefInfo& gallery_info =
           galleries_info.find(*id)->second;
       const std::string& device_id = gallery_info.device_id;
       // TODO(kmadhusu) handle MTP devices.
       DCHECK(MediaStorageUtil::IsMassStorageDevice(device_id));
-      FilePath path = MediaStorageUtil::FindDevicePathById(device_id);
+      FilePath path = gallery_info.AbsolutePath();
       // TODO(vandebo) we also need to check that these galleries are attached.
       // For now, just skip over entries that we couldn't find.
-      if (path.empty())
+      if (!path.IsAbsolute())
         continue;
-      CHECK(!path.empty());
-      path = path.Append(gallery_info.path);
 
       MediaFileSystemRegistry::MediaFSInfo new_entry;
       new_entry.name = gallery_info.display_name;
       new_entry.path = path;
       new_entry.fsid = RegisterFileSystem(device_id, path);
       result.push_back(new_entry);
       pref_id_map_[*id] = new_entry;
     }
 
     // TODO(vandebo) We need a way of getting notification when permission for
@@ skipping 282 matching lines @@
       extension_hosts_map_.find(profile);
   DCHECK(extension_hosts != extension_hosts_map_.end());
   ExtensionHostMap::size_type erase_count =
       extension_hosts->second.erase(extension_id);
   DCHECK_EQ(1U, erase_count);
   if (extension_hosts->second.empty())
     extension_hosts_map_.erase(extension_hosts);
 }
 
 }  // namespace chrome