GitLab

Implement https://github.com/w3c/screen-wake-lock/pull/291, which makes
the |type| parameter optional and default to "screen" in
WakeLock.request().

Intent to Implement and Ship:
https://groups.google.com/a/chromium.org/g/blink-dev/c/HxWEyZz2nmI

ChromeStatus entry:
https://chromestatus.com/feature/5725750881681408

Fixed: 1133696
Change-Id: Id3eb6281bfedeaabfa3a7e22d530d0133b50411f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2445017
Commit-Queue: Raphael Kubo da Costa <raphael.kubo.da.costa@intel.com>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Auto-Submit: Raphael Kubo da Costa <raphael.kubo.da.costa@intel.com>
Cr-Commit-Position: refs/heads/master@{#815113}