GitLab

non VR content includes:
1. 2D Dialog for external navigation request while in incognito mode
2. external 2D app


Bug: 739778, 740742
Change-Id: Idd1de302a1412a1815b6d64fc7db5ac6b8a458ed
Reviewed-on: https://chromium-review.googlesource.com/563883Reviewed-by: David Trainor <dtrainor@chromium.org>
Reviewed-by: Michael Thiessen <mthiesse@chromium.org>
Commit-Queue: Biao She <bshe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#485942}