Notify CloseFile from Pepper to FileSystem.

webkit/fileapi/file_system_operation.cc

Index: webkit/fileapi/file_system_operation.cc
diff --git a/webkit/fileapi/file_system_operation.cc b/webkit/fileapi/file_system_operation.cc
index 4265b6f71924571e71c765b39d547dd28083d77a..a8212016bab2b0bf663e89e3ecb482723199a9b8 100644
--- a/webkit/fileapi/file_system_operation.cc
+++ b/webkit/fileapi/file_system_operation.cc
@@ -399,6 +399,12 @@ void FileSystemOperation::OpenFile(const GURL& path_url,
                  base::kNullProcessHandle));
 }
 
+void FileSystemOperation::NotifyCloseFile(const GURL& path) {
+  // No particular task to do. This method is for remote file systems that
+  // need synchronization with remote server.
+  delete this;
+}
+
 // We can only get here on a write or truncate that's not yet completed.
 // We don't support cancelling any other operation at this time.
 void FileSystemOperation::Cancel(const StatusCallback& cancel_callback) {