The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7e877e77cf0bb411b33860aa86aa1aaa9ef86032

commit 7e877e77cf0bb411b33860aa86aa1aaa9ef86032
Author: Michael Thiessen <mthiesse@chromium.org>
Date: Mon Mar 05 16:03:15 2018

VR: Fix NPEs shutting down VR during activity destruction.

We're even hitting all of these in our tests, but I guess since they
happen during shutdown after the test has passed, nothing cares?

Bug:  818211 
Change-Id: I1dc85763fe3c268b352452f6dd703e4996732ae6
Reviewed-on: https://chromium-review.googlesource.com/946524
Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Cr-Commit-Position: refs/heads/master@{#540830}
[modify] https://crrev.com/7e877e77cf0bb411b33860aa86aa1aaa9ef86032/chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorView.java
[modify] https://crrev.com/7e877e77cf0bb411b33860aa86aa1aaa9ef86032/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellImpl.java

Your change meets the bar and is auto-approved for M66. Please go ahead and merge the CL to branch 3359 manually. Please contact milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), josafat@(ChromeOS), abdulsyed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7510507d0a5bb2744c15f9c1e3d016f3e5569a90

commit 7510507d0a5bb2744c15f9c1e3d016f3e5569a90
Author: Michael Thiessen <mthiesse@chromium.org>
Date: Thu Mar 08 16:38:00 2018

VR: Fix NPEs shutting down VR during activity destruction.

We're even hitting all of these in our tests, but I guess since they
happen during shutdown after the test has passed, nothing cares?

TBR=mthiesse@chromium.org

(cherry picked from commit 7e877e77cf0bb411b33860aa86aa1aaa9ef86032)

Bug:  818211 
Change-Id: I1dc85763fe3c268b352452f6dd703e4996732ae6
Reviewed-on: https://chromium-review.googlesource.com/946524
Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#540830}
Reviewed-on: https://chromium-review.googlesource.com/955725
Reviewed-by: Michael Thiessen <mthiesse@chromium.org>
Cr-Commit-Position: refs/branch-heads/3359@{#101}
Cr-Branched-From: 66afc5e5d10127546cc4b98b9117aff588b5e66b-refs/heads/master@{#540276}
[modify] https://crrev.com/7510507d0a5bb2744c15f9c1e3d016f3e5569a90/chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorView.java
[modify] https://crrev.com/7510507d0a5bb2744c15f9c1e3d016f3e5569a90/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellImpl.java