Remove NotImplemented from IsInVR

Remove NotImplemented from IsInVR

If a platform does not support VR, IsInVR should return false
without spamming the console.

BUG=712306
Review-Url: https://codereview.chromium.org/2822223002
Cr-Original-Commit-Position: refs/heads/master@{#465599}
Review-Url: https://codereview.chromium.org/2900163003 .
Cr-Commit-Position: refs/branch-heads/3071@{#685}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/cf2b7470eef6f2af442b63a8e6739e916212b8e3

[asimjour1, 2017-05-24 16:58:35]

Description was changed from

==========
Remove NotImplemented from IsInVR

If a platform does not support VR, IsInVR should return false
without spamming the console.

BUG=712306

Review-Url: https://codereview.chromium.org/2822223002
Cr-Commit-Position: refs/heads/master@{#465599}
(cherry picked from commit 37db26e938b37edc885a50ab1aca3aee1cfefb0d)
==========

to

==========
Remove NotImplemented from IsInVR

If a platform does not support VR, IsInVR should return false
without spamming the console.

BUG=712306

Review-Url: https://codereview.chromium.org/2822223002
Cr-Original-Commit-Position: refs/heads/master@{#465599}
Review-Url: https://codereview.chromium.org/2900163003 .
Cr-Commit-Position: refs/branch-heads/3071@{#685}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/cf2b7470eef6f2af442b63a8e673...
==========

[asimjour1, 2017-05-24 16:58:36]

Committed patchset #1 (id:1) manually as
cf2b7470eef6f2af442b63a8e6739e916212b8e3.

[asimjour, 2017-05-24 17:01:44]

asimjour@google.com changed reviewers:
+ asimjour@google.com, avi@chromium.org

[asimjour, 2017-05-24 17:01:45]

PTAL

[Avi (use Gerrit), 2017-05-24 18:06:49]

Yep! Thank you. LGTM