mandoline filesystem: Save cookie data to the mojo:filesystem.

components/filesystem/directory_impl.h

Index: components/filesystem/directory_impl.h
diff --git a/components/filesystem/directory_impl.h b/components/filesystem/directory_impl.h
index ed19d007c188013976d1326d1a8ad31790e7d529..b016b8395815cfae690dce337547240811464602 100644
--- a/components/filesystem/directory_impl.h
+++ b/components/filesystem/directory_impl.h
@@ -28,6 +28,10 @@ class DirectoryImpl : public Directory {
                 scoped_ptr<base::ScopedTempDir> temp_dir);
   ~DirectoryImpl() override;
 
+  void set_connection_error_handler(const mojo::Closure& error_handler) {
+    binding_.set_connection_error_handler(error_handler);
+  }
+
   // |Directory| implementation:
   void Read(const ReadCallback& callback) override;
   void OpenFile(const mojo::String& path,