GitLab

https://crrev.com/c/1120677 "Don't create a Surface for WebXR SharedBuffer
mode" had a logic error that led to the GPU process connection being recreated
unconditionally on re-entering VR, resulting in an inconsistent state where it
tried to reuse mailbox names belonging to the previous connection.

Change-Id: Ic005c7884a46b3d1b3da986a55e9d733f09d68d3
Reviewed-on: https://chromium-review.googlesource.com/1125273Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Klaus Weidner <klausw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572390}