Note that this should also adjust any functionality that needs to be hidden until full release of Chrome VR behind the VrShell feature flag https://cs.chromium.org/chromium/src/content/public/common/content_features.cc?rcl=0&l=204

Change to enable flag is out https://codereview.chromium.org/2559873002/ (although there might be some refactoring work that could go into that change).

Either way I'll hold off even if that is approved until the tests are working, see  issue 671373 .

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/597a5430c27891e7d1402ea97c7622a666ce5f6c

commit 597a5430c27891e7d1402ea97c7622a666ce5f6c
Author: amp <amp@chromium.org>
Date: Fri Dec 09 20:27:19 2016

Enable VR shell on Android builds

BUG= 671349 

Review-Url: https://codereview.chromium.org/2559873002
Cr-Commit-Position: refs/heads/master@{#437622}

[modify] https://crrev.com/597a5430c27891e7d1402ea97c7622a666ce5f6c/chrome/common/features.gni
[modify] https://crrev.com/597a5430c27891e7d1402ea97c7622a666ce5f6c/chrome/test/android/javatests/src/org/chromium/chrome/test/ChromeInstrumentationTestRunner.java

FYI to note the decision, but we disabled the tests to get the flag enabled now rather than waiting.   Issue 671373  will track getting the tests working (and enabled) again.