Give a canvas/video test more time.

We have seen the yuv-video-on-accelerated-canvas.html test timeout
and since it's not obviously fast, maybe it is just a case of too
slow bot. Trying to give it more time hoping that will solve
the problem.

BUG=450699

Review URL: https://codereview.chromium.org/872383002

git-svn-id: svn://svn.chromium.org/blink/trunk@189018 bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed
tree: 7871ce9ed61340655f528c0bfc02743b286761cf
  1. third_party/