Generic Sensor API : Ambient Light Sensor API.

third_party/WebKit/Source/modules/sensor/als_reading.h

Index: third_party/WebKit/Source/modules/sensor/als_reading.h
diff --git a/third_party/WebKit/Source/modules/sensor/als_reading.h b/third_party/WebKit/Source/modules/sensor/als_reading.h
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+// 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.
+
+#ifndef BLINK_MODULES_SENSOR_ALS_READING_H_
+#define BLINK_MODULES_SENSOR_ALS_READING_H_
+
+#include "modules/ModulesExport.h"
+#include "wtf/Assertions.h"
+
+namespace blink {
+
+// Simple struct to hold the Ambient light sensor readings.
+struct MODULES_EXPORT AmbientLightSensorReadingProxy {
+    double timeStamp;
+    double illuminance;
+
+    AmbientLightSensorReadingProxy()
+        : timeStamp(0)
+        , illuminance(std::numeric_limits<double>::infinity())
+    {
+    }
+    AmbientLightSensorReadingProxy(double t, double i)
+        : timeStamp(t)
+        , illuminance(i)
+    {
+    }
+};
+
+} // namespace blink
+
+#endif // BLINK_MODULES_SENSOR_ALS_READING_H_