tree a32ccb381931e64ac8228096aeaef788d0730ac0
parent 14763648d602c04d0459778deb05eafd506bb1c6
author Mikael Pessa <mikaelpessa@gmail.com> 1553190154 +0000
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1553190154 +0000

[scenic] Collect all waiting frames into a single instance

Make sure we only have a single async wait happening at a time in DefaultFrameScheduler.
This prevents the bug (SCN-1306) where a delayed frame can cause a second frame to
start rendering at the same time. It also makes it easier to reason about scheduling.

SCN-1306 #done

Change-Id: I9bc0fb4f077db9f6c7f346669785b744fc3113d7