[ew] Add basic classes.

chrome/browser/chromeos/file_system_provider/fileapi/backend_delegate.cc

Index: chrome/browser/chromeos/file_system_provider/fileapi/backend_delegate.cc
diff --git a/chrome/browser/chromeos/file_system_provider/fileapi/backend_delegate.cc b/chrome/browser/chromeos/file_system_provider/fileapi/backend_delegate.cc
index 5cd5e30c6e40a9dfe6eec6ea8f9bd98d8eb8390f..df954441743b1d4c829c955fb86519f5a9f5a41a 100644
--- a/chrome/browser/chromeos/file_system_provider/fileapi/backend_delegate.cc
+++ b/chrome/browser/chromeos/file_system_provider/fileapi/backend_delegate.cc
@@ -63,5 +63,11 @@ scoped_ptr<storage::FileStreamWriter> BackendDelegate::CreateFileStreamWriter(
       new FileStreamWriter(url, offset));
 }
 
+storage::WatcherManager* BackendDelegate::GetWatcherManager(
+    const storage::FileSystemURL& url) {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
 }  // namespace file_system_provider
 }  // namespace chromeos