Adding a util function for setting a "do not backup" bit

The "do not backup" bit can be set so that certain files/folders can be excluded
from iTunes/iCloud backup.

Also added a pref that indicates if the user has already set a "do not backup"
bit to the OTR Profiles's state stash path

Review URL: https://codereview.chromium.org/1153053009

Cr-Commit-Position: refs/heads/master@{#331934}

1 files changed, 19 insertions, 0 deletions

diff --git a/ios/chrome/browser/file_metadata_util.h b/ios/chrome/browser/file_metadata_util.h
new file mode 100644
index 0000000..02c2a52
--- /dev/null
+++ b/ios/chrome/browser/file_metadata_util.h
@@ -0,0 +1,19 @@
+// Copyright 2015 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 IOS_CHROME_BROWSER_FILE_METADATA_UTIL_H_
+#define IOS_CHROME_BROWSER_FILE_METADATA_UTIL_H_
+
+#include "base/files/file_path.h"
+
+namespace file_metadata_util {
+
+// Synchronously sets a bit on the file system that prevents iCloud/iTunes
+// backups of the file/folder at |path|. There must be a file/folder present at
+// |path|.
+void AddSkipSystemBackupAttributeToItem(const base::FilePath& path);
+
+}  // namespace file_metadata_util
+
+#endif  // IOS_CHROME_BROWSER_FILE_METADATA_UTIL_H_