The infrastructure is Android-only at the moment.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/43e217685e5c263404a0b71eadd5f3a30ff59ccf

commit 43e217685e5c263404a0b71eadd5f3a30ff59ccf
Author: bsheedy <bsheedy@chromium.org>
Date: Mon Mar 20 21:34:31 2017

Add screen tap WebVR tests

Adds two new WebVR e2e tests verifying that screen taps are registered in VR
when using Cardboard but not Daydream View.

Also increases the timeout of certain Javascript executions since 50 ms was
sometimes (although rarely) causing flakiness.

Re-names the VR restrictions to more clearly differentiate between restrictions
on Daydream-readiness and restrictions on the currently paired viewer.

BUG= 702700 

Review-Url: https://codereview.chromium.org/2753303002
Cr-Commit-Position: refs/heads/master@{#458195}

[modify] https://crrev.com/43e217685e5c263404a0b71eadd5f3a30ff59ccf/chrome/android/javatests/src/org/chromium/chrome/browser/vr_shell/VrShellTest.java
[modify] https://crrev.com/43e217685e5c263404a0b71eadd5f3a30ff59ccf/chrome/android/javatests/src/org/chromium/chrome/browser/vr_shell/WebVrTest.java
[modify] https://crrev.com/43e217685e5c263404a0b71eadd5f3a30ff59ccf/chrome/test/android/javatests/src/org/chromium/chrome/test/ChromeInstrumentationTestRunner.java
[modify] https://crrev.com/43e217685e5c263404a0b71eadd5f3a30ff59ccf/chrome/test/android/javatests/src/org/chromium/chrome/test/util/ChromeRestriction.java
[add] https://crrev.com/43e217685e5c263404a0b71eadd5f3a30ff59ccf/chrome/test/data/android/webvr_instrumentation/html/test_screen_taps_not_registered_on_daydream.html
[add] https://crrev.com/43e217685e5c263404a0b71eadd5f3a30ff59ccf/chrome/test/data/android/webvr_instrumentation/html/test_screen_taps_registered_on_cardboard.html

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d2bb15449ca92f88f8f4e9f6a93a96d567b00e2c

commit d2bb15449ca92f88f8f4e9f6a93a96d567b00e2c
Author: bsheedy <bsheedy@chromium.org>
Date: Fri Apr 07 18:30:49 2017

Add WebVR device capability e2e test

Tests that the device capabilities reported by WebVR match expectations,
although currently all tested devices have the same expectations.

Automates one of our manual test cases.

BUG= 702700 

Review-Url: https://codereview.chromium.org/2794383002
Cr-Commit-Position: refs/heads/master@{#462934}

[modify] https://crrev.com/d2bb15449ca92f88f8f4e9f6a93a96d567b00e2c/chrome/android/javatests/src/org/chromium/chrome/browser/vr_shell/WebVrTest.java
[add] https://crrev.com/d2bb15449ca92f88f8f4e9f6a93a96d567b00e2c/chrome/test/data/android/webvr_instrumentation/html/test_device_capabilities_match_expectations.html

bsheedy: What does this bug track now? Should we close it and file new issues for specific gaps?

Yeah, closing it sounds good. Individual issues are being filed for missing tests so this is unnecessary.