Remove/mark obsolete VRPresent UseCounter

third_party/WebKit/Source/core/frame/UseCounter.h

 /*
  * Copyright (C) 2012 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1185 matching lines @@
     MetaSetCookie = 1547,
     MetaRefresh = 1548,
     MetaSetCookieWhenCSPBlocksInlineScript = 1549,
     MetaRefreshWhenCSPBlocksInlineScript = 1550,
     MiddleClickAutoscrollStart = 1551,
     RTCPeerConnectionCreateOfferOptionsOfferToReceive = 1553,
     DragAndDropScrollStart = 1554,
     PresentationConnectionListConnectionAvailableEventListener = 1555,
     WebAudioAutoplayCrossOriginIframe = 1556,
     VRGetDisplays = 1558,
-    VRPresent = 1559,
     VRDeprecatedGetPose = 1560,
     CSSZoomReset = 1578,
     CSSZoomDocument = 1579,
     XSSAuditorBlockedScript = 1581,
     XSSAuditorBlockedEntirePage = 1582,
     XSSAuditorDisabled = 1583,
     XSSAuditorEnabledFilter = 1584,
     XSSAuditorEnabledBlock = 1585,
     XSSAuditorInvalid = 1586,
     TextInputEventOnInput = 1589,
@@ skipping 385 matching lines @@
     // Tracks what features/properties need to be reported to the legacy
     // histograms.
     BitVector m_featureBits;
     BitVector m_CSSBits;
   } m_legacyCounter;
 };
 
 }  // namespace blink
 
 #endif  // UseCounter_h