Adds basic test case to detect video glitches.

This test case will select a 480p video, generate random time values within video
duration and capture screenshots at those times. It will compare such images with
known good images that it had downloaded when it(the test) began.

  * Removed video.html file because it was already included in another CL.
  * Changed 'TIME' attribute of the test from SHORT to LONG. Test runs for about 20mins.

BUG=chromium:363815
TEST=Ran this test locally.

Change-Id: Iaad9f058727548a9d23dbefb431d7638593d3790
Reviewed-on: https://chromium-review.googlesource.com/199646
Reviewed-by: Kris Rambish <krisr@chromium.org>
Reviewed-by: Rohit Makasana <rohitbm@chromium.org>
Commit-Queue: Rohit Makasana <rohitbm@chromium.org>
Tested-by: Rohit Makasana <rohitbm@chromium.org>
2 files changed