Adding WebVR interface to Blink

Source/modules/vr/PositionSensorVRDevice.h

Index: Source/modules/vr/PositionSensorVRDevice.h
diff --git a/Source/modules/vr/PositionSensorVRDevice.h b/Source/modules/vr/PositionSensorVRDevice.h
new file mode 100644
index 0000000000000000000000000000000000000000..2eaa84336b2b3a6f7acbeb5566b8063be1e2f301
--- /dev/null
+++ b/Source/modules/vr/PositionSensorVRDevice.h
@@ -0,0 +1,31 @@
+// Copyright 2014 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 PositionSensorVRDevice_h
+#define PositionSensorVRDevice_h
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "modules/vr/NavigatorVRDevice.h"
+#include "modules/vr/VRDevice.h"
+#include "modules/vr/VRPositionState.h"
+#include "platform/heap/Handle.h"
+#include "wtf/RefCounted.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class PositionSensorVRDevice final : public VRDevice {
+    DEFINE_WRAPPERTYPEINFO();
+public:
+    PositionSensorVRDevice(VRHardwareUnit*);

[sof, 2015/02/24 12:35:29]

nit: add 'explicit'

+
+    VRPositionState* getState(double timeOffset = 0.0);
+    void resetSensor();
+
+    virtual void trace(Visitor*) override;
+};
+
+} // namespace blink
+
+#endif // PositionSensorVRDevice_h