Do not return FileSystem contents if the profile is in incognito mode.

webkit/browser/fileapi/mock_file_system_context.cc

 // Copyright (c) 2013 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 "webkit/browser/fileapi/mock_file_system_context.h"
 
 #include "base/memory/scoped_vector.h"
 #include "webkit/browser/fileapi/external_mount_points.h"
 #include "webkit/browser/fileapi/file_system_backend.h"
 #include "webkit/browser/fileapi/file_system_context.h"
@@ skipping 21 matching lines @@
       base::MessageLoopProxy::current().get(),
       base::MessageLoopProxy::current().get(),
       ExternalMountPoints::CreateRefCounted().get(),
       make_scoped_refptr(new quota::MockSpecialStoragePolicy()).get(),
       quota_manager_proxy,
       additional_providers.Pass(),
       base_path,
       CreateAllowFileAccessOptions());
 }
 
+FileSystemContext* CreateIncognitoFileSystemContextForTesting(
+    quota::QuotaManagerProxy* quota_manager_proxy,
+    const base::FilePath& base_path) {
+  ScopedVector<FileSystemBackend> additional_providers;
+  return new FileSystemContext(
+      base::MessageLoopProxy::current().get(),
+      base::MessageLoopProxy::current().get(),
+      ExternalMountPoints::CreateRefCounted().get(),
+      make_scoped_refptr(new quota::MockSpecialStoragePolicy()).get(),
+      quota_manager_proxy,
+      additional_providers.Pass(),
+      base_path,
+      CreateIncognitoFileSystemOptions());
+}
+
 }  // namespace fileapi