diff --git a/chrome/browser/chromeos/gdata/gdata_file_system.cc b/chrome/browser/chromeos/gdata/gdata_file_system.cc
index 3b4e60e27ebdba..f246808119a5c6 100644
--- a/chrome/browser/chromeos/gdata/gdata_file_system.cc
+++ b/chrome/browser/chromeos/gdata/gdata_file_system.cc
@@ -1677,7 +1677,7 @@ void GDataFileSystem::RemoveOnUIThread(
 
 void GDataFileSystem::RemoveOnUIThreadAfterGetEntryInfo(
     const FilePath& file_path,
-    bool is_recursive,
+    bool /* is_recursive */,
     const FileOperationCallback& callback,
     GDataFileError error,
     scoped_ptr<GDataEntryProto> entry_proto) {
diff --git a/chrome/browser/chromeos/gdata/gdata_file_system_interface.h b/chrome/browser/chromeos/gdata/gdata_file_system_interface.h
index 68ab2461df4fa0..f7012b2b914c9b 100644
--- a/chrome/browser/chromeos/gdata/gdata_file_system_interface.h
+++ b/chrome/browser/chromeos/gdata/gdata_file_system_interface.h
@@ -224,8 +224,7 @@ class GDataFileSystemInterface {
   // needs to be present in in-memory representation of the file system that
   // in order to be removed.
   //
-  // TODO(zelidrag): Wire |is_recursive| through gdata api
-  // (find appropriate calls for it).
+  // TODO(satorux): is_recursive is not supported yet. crbug.com/138282
   //
   // Can be called from UI/IO thread. |callback| is run on the calling thread.
   virtual void Remove(const FilePath& file_path,