Generic Sensor API : Ambient Light Sensor API.

third_party/WebKit/Source/modules/sensor/SensorReading.cpp

+// 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.
+
+#include "modules/sensor/SensorReading.h"
+
+namespace blink {
+
+SensorReading::SensorReading()
+{
+}
+
+SensorReading::SensorReading(bool providesTimeStamp, DOMHighResTimeStamp timeStamp)
+    : m_canProvideTimeStamp(providesTimeStamp)
+    , m_timeStamp(timeStamp)
+{
+}
+
+DOMHighResTimeStamp SensorReading::timeStamp(bool& isNull)
+{
+    if (m_canProvideTimeStamp)
+        return m_timeStamp;
+
+    isNull = true;
+    return 0;
+}
+
+SensorReading::~SensorReading()
+{
+}
+
+DEFINE_TRACE(SensorReading)
+{
+}
+
+} // namespace blink