Defer ARC file system operations while ARC is booting.

components/arc/file_system/test/fake_arc_file_system_operation_runner.h

Index: components/arc/file_system/test/fake_arc_file_system_operation_runner.h
diff --git a/components/arc/file_system/test/fake_arc_file_system_operation_runner.h b/components/arc/file_system/test/fake_arc_file_system_operation_runner.h
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index 0000000000000000000000000000000000000000..017b5083ec14b95caf3eeb74c47e4451da964d12
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+++ b/components/arc/file_system/test/fake_arc_file_system_operation_runner.h
@@ -0,0 +1,37 @@
+// 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.
+
+#ifndef COMPONENTS_ARC_FILE_SYSTEM_FAKE_ARC_FILE_SYSTEM_OPERATION_RUNNER_H_
+#define COMPONENTS_ARC_FILE_SYSTEM_FAKE_ARC_FILE_SYSTEM_OPERATION_RUNNER_H_
+
+#include "base/macros.h"
+#include "components/arc/file_system/arc_file_system_operation_runner.h"
+
+namespace arc {
+
+// TODO(crbug.com/683049): Implement a generic fake.
+class FakeArcFileSystemOperationRunner : public ArcFileSystemOperationRunner {
+ public:
+  explicit FakeArcFileSystemOperationRunner(ArcBridgeService* bridge_service);
+  ~FakeArcFileSystemOperationRunner() override;
+
+  // ArcFileSystemOperationRunner overrides.
+  void GetFileSize(const GURL& url,
+                   const GetFileSizeCallback& callback) override;
+  void OpenFileToRead(const GURL& url,
+                      const OpenFileToReadCallback& callback) override;
+  void GetDocument(const std::string& authority,
+                   const std::string& document_id,
+                   const GetDocumentCallback& callback) override;
+  void GetChildDocuments(const std::string& authority,
+                         const std::string& parent_document_id,
+                         const GetChildDocumentsCallback& callback) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FakeArcFileSystemOperationRunner);
+};
+
+}  // namespace arc
+
+#endif  // COMPONENTS_ARC_FILE_SYSTEM_FAKE_ARC_FILE_SYSTEM_OPERATION_RUNNER_H_