cc: Consider visible rect for update tile priority early out.
This patch adds a visible rect check for an early out from update
tile priorities.
The problem is that we can update tile priorities, then update
the visible rect in animation, and call update tile priorities
again. The second one would normally early out since it's called
in the same frame. This ensures the early out doesn't happen in
these cases.
BUG=423455
R=danakj, brianderson, enne
Review URL: https://codereview.chromium.org/
667053003
Cr-Commit-Position: refs/heads/master@{#300526}