Convert Callback to {Once,Repeating}Callback in RenderThread/FrameImpl.

Use OnceCallback where possible, and use BindRepeating() where it is
meant to be a RepeatingCallback.

R=avi@chromium.org, liberato@chromium.org

Bug: 953861, 751838
Change-Id: I97c1b75a616ade9f17385ec606620e50850f94e9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1629273
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Frank Liberato <liberato@chromium.org>
Commit-Queue: danakj <danakj@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663314}
6 files changed