HID backend

device/hid/hid_utils_mac.h

Index: device/hid/hid_utils_mac.h
diff --git a/device/hid/hid_utils_mac.h b/device/hid/hid_utils_mac.h
new file mode 100644
index 0000000000000000000000000000000000000000..f1349aec1ad35c2e197c005224fd3321171022da
--- /dev/null
+++ b/device/hid/hid_utils_mac.h
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+// Copyright (c) 2014 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 DEVICE_HID_HID_UTILS_MAC_H_
+#define DEVICE_HID_HID_UTILS_MAC_H_
+
+#include "base/callback.h"
+#include "base/memory/ref_counted.h"
+
+#include <IOKit/hid/IOHIDManager.h>
+
+namespace device {
+
+bool GetHidIntProperty(IOHIDDeviceRef device, CFStringRef key, int32_t* result);
+
+bool GetHidStringProperty(IOHIDDeviceRef device,
+                       CFStringRef key,
+                       std::string* result);
+
+}  // namespace device
+
+#endif  // DEVICE_HID_HID_UTILS_MAC_H_