Defer ARC file system operations while ARC is booting.

components/arc/file_system/arc_file_system_operation_runner.cc

Index: components/arc/file_system/arc_file_system_operation_runner.cc
diff --git a/components/arc/file_system/arc_file_system_operation_runner.cc b/components/arc/file_system/arc_file_system_operation_runner.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ac9662effcb7176664846aea2ee0eba2abecee4d
--- /dev/null
+++ b/components/arc/file_system/arc_file_system_operation_runner.cc
@@ -0,0 +1,19 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/arc/file_system/arc_file_system_operation_runner.h"
+
+namespace arc {
+
+// static
+const char ArcFileSystemOperationRunner::kArcServiceName[] =
+    "arc::ArcFileSystemOperationRunner";
+
+ArcFileSystemOperationRunner::ArcFileSystemOperationRunner(
+    ArcBridgeService* bridge_service)
+    : ArcService(bridge_service) {}
+
+ArcFileSystemOperationRunner::~ArcFileSystemOperationRunner() = default;
+
+}  // namespace arc