GitLab

Move the test from TestExpectations to NeverFixTests, where all other
clearkey-mp4-playback-* tests are.

TBR=robertma, jrummell

Bug: 857271
Change-Id: Id1931c5049d297b2dd70c6388e9369f4aa5ae94f
Reviewed-on: https://chromium-review.googlesource.com/1118166Reviewed-by: Raphael Kubo da Costa (CET) <raphael.kubo.da.costa@intel.com>
Commit-Queue: Raphael Kubo da Costa (CET) <raphael.kubo.da.costa@intel.com>
Cr-Commit-Position: refs/heads/master@{#571078}