GitLab

When overridding SetUpCommandLine(), subclasses of MediaBrowserTest
should always call MediaBrowserTest::SetUpCommandLine(). This also helps
remove duplicate code in setting autoplay policy in these tests.

Bug: 707128
Test: Clean up only. No functionality change.
Change-Id: Ic06ba4b48e20cf342db7f60a32565766f5d1a1d5
Reviewed-on: https://chromium-review.googlesource.com/c/1257599Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Xiaohan Wang <xhwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#596358}