Move VRDisplay timer to frame-specific TaskRunnerTimer.

third_party/WebKit/Source/modules/vr/VRDisplay.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 VRDisplay_h
 #define VRDisplay_h
 
 #include "core/dom/Document.h"
 #include "core/dom/FrameRequestCallback.h"
 #include "core/events/EventTarget.h"
@@ skipping 133 matching lines @@
   Member<VRStageParameters> m_stageParameters;
   Member<VREyeParameters> m_eyeParametersLeft;
   Member<VREyeParameters> m_eyeParametersRight;
   device::mojom::blink::VRPosePtr m_framePose;
   VRLayer m_layer;
   double m_depthNear;
   double m_depthFar;
 
   void dispose();
 
-  Timer<VRDisplay> m_fullscreenCheckTimer;
+  TaskRunnerTimer<VRDisplay> m_fullscreenCheckTimer;
   String m_fullscreenOrigWidth;
   String m_fullscreenOrigHeight;
   gpu::gles2::GLES2Interface* m_contextGL;
   Member<WebGLRenderingContextBase> m_renderingContext;
 
   Member<ScriptedAnimationController> m_scriptedAnimationController;
   bool m_animationCallbackRequested;
   bool m_inAnimationFrame;
   bool m_displayBlurred;
   bool m_reenteredFullscreen;
@@ skipping 22 matching lines @@
   ServiceInactive = 11,
   RequestDenied = 12,
   PresentationResultMax,  // Must be last member of enum.
 };
 
 void ReportPresentationResult(PresentationResult);
 
 }  // namespace blink
 
 #endif  // VRDisplay_h