Disable failing blink_perf.canvas perf tests

TBR=crouleau@chromium.org, aaronhk@chromium.org, fserb@chromium.org
NOTRY=true

Bug: 978500
Change-Id: I8f45b57e8019d89053727516131ae28ef0049a92
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1679639
Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: John Chen <johnchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672772}
1 file changed