[sensors] Ambient light sensor bindings implementation

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

Index: third_party/WebKit/Source/modules/sensor/AmbientLightSensorReadingInit.idl
diff --git a/third_party/WebKit/Source/modules/sensor/AmbientLightSensorReadingInit.idl b/third_party/WebKit/Source/modules/sensor/AmbientLightSensorReadingInit.idl
new file mode 100644
index 0000000000000000000000000000000000000000..30dc03e7e798288ed7a6fd8bb06a469d6fa2f9ce
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+++ b/third_party/WebKit/Source/modules/sensor/AmbientLightSensorReadingInit.idl
@@ -0,0 +1,10 @@
+// Copyright 2016 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/ambient-light/#dictdef-ambientlightsensorreadinginit
+
+dictionary AmbientLightSensorReadingInit {
+    unrestricted double illuminance;
+};