Generic Sensor API : Ambient Light Sensor API.

third_party/WebKit/Source/modules/sensor/SensorOptions.idl

Index: third_party/WebKit/Source/modules/sensor/SensorOptions.idl
diff --git a/third_party/WebKit/Source/modules/sensor/SensorOptions.idl b/third_party/WebKit/Source/modules/sensor/SensorOptions.idl
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index 0000000000000000000000000000000000000000..7097687108419b31b9feb2c2b8a414c6fbcb7c90
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+++ b/third_party/WebKit/Source/modules/sensor/SensorOptions.idl
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+// 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.
+
+// Specification at:
+// https://w3c.github.io/sensors/#dictdef-sensoroptions
+
+dictionary SensorOptions {
+  double? frequency;
+  double? timeout;
+};