[sensors]: Introduce the Generic Sensor API.

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

+// 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 SensorReadingEvent_h
+#define SensorReadingEvent_h
+
+#include "modules/EventModules.h"
+#include "modules/sensor/SensorReading.h"
+#include "modules/sensor/SensorReadingEventInit.h"
+#include "platform/heap/Handle.h"
+
+namespace blink {
+
+class SensorReadingEvent : public Event {
+    DEFINE_WRAPPERTYPEINFO();
+
+public:
+    static SensorReadingEvent* create()
+    {
+        return new SensorReadingEvent;
+    }
+
+    static SensorReadingEvent* create(const AtomicString& eventType)
+    {
+        return new SensorReadingEvent(eventType);
+    }
+
+    static SensorReadingEvent* create(const AtomicString& eventType, SensorReading& reading)
+    {
+        return new SensorReadingEvent(eventType, reading);
+    }
+
+    static SensorReadingEvent* create(const AtomicString& eventType, const SensorReadingEventInit& initializer)
+    {
+        return new SensorReadingEvent(eventType, initializer);
+    }
+
+    ~SensorReadingEvent() override;
+
+    // TODO(riju): crbug.com/614797 .
+    SensorReading* reading() const { return m_reading.get(); }
+    const AtomicString& interfaceName() const override;
+
+    DECLARE_VIRTUAL_TRACE();
+
+protected:
+    Member<SensorReading> m_reading;
+
+private:
+    SensorReadingEvent();
+    SensorReadingEvent(const AtomicString& eventType);

[haraken, 2016/05/28 00:09:23]

Add explicit.

[riju_, 2016/05/30 10:15:13]

Done.

+    SensorReadingEvent(const AtomicString& eventType, SensorReading&);
+    SensorReadingEvent(const AtomicString& eventType, const SensorReadingEventInit& initializer);
+
+};
+
+DEFINE_TYPE_CASTS(SensorReadingEvent, Event, event, event->interfaceName() == EventNames::SensorReadingEvent, event.interfaceName() == EventNames::SensorReadingEvent);
+
+} // namepsace blink
+
+#endif // SensorReadingEvent_h