Updated VRPose.timestamp to use same casing as WebVR spec.

third_party/WebKit/Source/modules/vr/VRPose.h

 // Copyright 2015 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 VRPose_h
 #define VRPose_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
+#include "core/dom/DOMHighResTimeStamp.h"
 #include "core/dom/DOMTypedArray.h"
 #include "device/vr/vr_service.mojom-blink.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class VRPose final : public GarbageCollected<VRPose>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static VRPose* create()
     {
         return new VRPose();
     }
 
-    double timeStamp() const { return m_timeStamp; }
+    DOMHighResTimeStamp timestamp() const { return m_timestamp; }
     DOMFloat32Array* orientation() const { return m_orientation; }
     DOMFloat32Array* position() const { return m_position; }
     DOMFloat32Array* angularVelocity() const { return m_angularVelocity; }
     DOMFloat32Array* linearVelocity() const { return m_linearVelocity; }
     DOMFloat32Array* angularAcceleration() const { return m_angularAcceleration; }
     DOMFloat32Array* linearAcceleration() const { return m_linearAcceleration; }
 
     void setPose(const device::blink::VRPosePtr&);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     VRPose();
 
-    double m_timeStamp;
+    DOMHighResTimeStamp m_timestamp;
     Member<DOMFloat32Array> m_orientation;
     Member<DOMFloat32Array> m_position;
     Member<DOMFloat32Array> m_angularVelocity;
     Member<DOMFloat32Array> m_linearVelocity;
     Member<DOMFloat32Array> m_angularAcceleration;
     Member<DOMFloat32Array> m_linearAcceleration;
 };
 
 } // namespace blink
 
 #endif // VRPose_h