Generalize the API of WakeLockContext mojo interface.

device/wake_lock/public/interfaces/wake_lock_param_traits.h

Index: device/wake_lock/public/interfaces/wake_lock_param_traits.h
diff --git a/device/wake_lock/public/interfaces/wake_lock_param_traits.h b/device/wake_lock/public/interfaces/wake_lock_param_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..862fdc1d2342726edb9a1e2015d1ce0502086542
--- /dev/null
+++ b/device/wake_lock/public/interfaces/wake_lock_param_traits.h
@@ -0,0 +1,34 @@
+// 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 DEVICE_WAKE_LOCK_PUBLIC_INTERFACES_WAKE_LOCK_PARAM_TRAITS_H_
+#define DEVICE_WAKE_LOCK_PUBLIC_INTERFACES_WAKE_LOCK_PARAM_TRAITS_H_
+
+#include <stddef.h>
+
+#include "device/wake_lock/public/interfaces/wake_lock_context.mojom.h"
+
+namespace mojo {
+
+template <>
+struct EnumTraits<device::mojom::WakeLockType,
+                  device::PowerSaveBlocker::PowerSaveBlockerType> {
+  static device::mojom::WakeLockType ToMojom(
+      device::PowerSaveBlocker::PowerSaveBlockerType input);
+  static bool FromMojom(device::mojom::WakeLockType input,
+                        device::PowerSaveBlocker::PowerSaveBlockerType* output);
+};
+
+template <>
+struct EnumTraits<device::mojom::WakeLockReason,
+                  device::PowerSaveBlocker::Reason> {
+  static device::mojom::WakeLockReason ToMojom(
+      device::PowerSaveBlocker::Reason input);
+  static bool FromMojom(device::mojom::WakeLockReason input,
+                        device::PowerSaveBlocker::Reason* output);
+};
+
+}  // namespace mojo
+
+#endif  // DEVICE_WAKE_LOCK_PUBLIC_INTERFACES_WAKE_LOCK_PARAM_TRAITS_H_