Also updated FrameBuffer unittests to use the GlobalSimulatedTimeController. Bug: webrtc:7408, webrtc:9378 Change-Id: I8ade27492f66cdd8950b38f5f4a268714dbc35fc Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/164536 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Reviewed-by: Rasmus Brandt <brandtr@webrtc.org> Commit-Queue: Philip Eliasson <philipel@webrtc.org> Cr-Commit-Position: refs/heads/master@{#30422}