Web expose FileSystemFileEntry, FileSystemDirectoryEntry and friends

chrome/common/extensions/api/media_galleries.idl

Index: chrome/common/extensions/api/media_galleries.idl
diff --git a/chrome/common/extensions/api/media_galleries.idl b/chrome/common/extensions/api/media_galleries.idl
index ebbb1f35db3d1ed5b0f1f57bba67e99afa6bcdf3..c2bf97a1a12684652abb8cf7d71bea500c8f4e7e 100644
--- a/chrome/common/extensions/api/media_galleries.idl
+++ b/chrome/common/extensions/api/media_galleries.idl
@@ -70,10 +70,10 @@ namespace mediaGalleries {
   };
 
   callback MediaFileSystemsCallback =
-      void ([instanceOf=DOMFileSystem] object[] mediaFileSystems);
+      void ([instanceOf=FileSystem] object[] mediaFileSystems);
 
   callback AddUserFolderCallback =
-      void ([instanceOf=DOMFileSystem] object[] mediaFileSystems,
+      void ([instanceOf=FileSystem] object[] mediaFileSystems,
             DOMString selectedFileSystemName);
 
   [nodefine] callback DropPermissionForMediaFileSystemCallback = void ();
@@ -212,7 +212,7 @@ namespace mediaGalleries {
 
     // Get metadata about a specific media file system.
     [nocompile] static MediaFileSystemMetadata getMediaFileSystemMetadata(
-        [instanceOf=DOMFileSystem] object mediaFileSystem);
+        [instanceOf=FileSystem] object mediaFileSystem);
 
     // Get metadata for all available media galleries.
     [nodefine, deprecated="Use getMediaFileSystemMetadata instead."]