Adding RevokeFileSystemByPath

chrome/browser/media_gallery/media_file_system_registry.cc

Index: chrome/browser/media_gallery/media_file_system_registry.cc
diff --git a/chrome/browser/media_gallery/media_file_system_registry.cc b/chrome/browser/media_gallery/media_file_system_registry.cc
index ebeca1a5bb4e959de449d0b218c6d4c1ce1af0a5..ed5308160a587afd849b33b5c5df45245c470039 100644
--- a/chrome/browser/media_gallery/media_file_system_registry.cc
+++ b/chrome/browser/media_gallery/media_file_system_registry.cc
@@ -186,6 +186,8 @@ void MediaFileSystemRegistry::RevokeMediaFileSystem(const FilePath& path) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   IsolatedContext* isolated_context = IsolatedContext::GetInstance();
+  isolated_context->RevokeFileSystemByPath(path);
+
   for (ChildIdToMediaFSMap::iterator child_it = media_fs_map_.begin();
        child_it != media_fs_map_.end();
        ++child_it) {
@@ -193,7 +195,6 @@ void MediaFileSystemRegistry::RevokeMediaFileSystem(const FilePath& path) {
     MediaPathToFSIDMap::iterator media_path_it = child_map.find(path);
     if (media_path_it == child_map.end())
       continue;
-    isolated_context->RevokeFileSystem(media_path_it->second);
     child_map.erase(media_path_it);
   }
 }