The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/44fb78cdfdc66c99f28fe207cbbebcbd1ced42d8

commit 44fb78cdfdc66c99f28fe207cbbebcbd1ced42d8
Author: Michael Thiessen <mthiesse@chromium.org>
Date: Thu Jul 06 00:13:29 2017

VR: Fix double-conversion of monotonic time to document-zero time.

Bug:  739216 
Change-Id: I0731e067d3e07504b17be7c2ca9c10d288b5c790
Reviewed-on: https://chromium-review.googlesource.com/558429
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Reviewed-by: Brandon Jones <bajones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#484386}
[add] https://crrev.com/44fb78cdfdc66c99f28fe207cbbebcbd1ced42d8/third_party/WebKit/LayoutTests/vr/requestAnimationFrame_consistentTimestamps.html
[modify] https://crrev.com/44fb78cdfdc66c99f28fe207cbbebcbd1ced42d8/third_party/WebKit/LayoutTests/vr/resources/mock-vr-service.js
[modify] https://crrev.com/44fb78cdfdc66c99f28fe207cbbebcbd1ced42d8/third_party/WebKit/Source/modules/vr/VRDisplay.cpp
[modify] https://crrev.com/44fb78cdfdc66c99f28fe207cbbebcbd1ced42d8/third_party/WebKit/Source/modules/vr/VRDisplay.h