Add ui back as a dependency of media_perftests. This fixes an Android failure.

This reverts part of: https://codereview.chromium.org/83243007

BUG=327205,302505
TBR=tfarina

Review URL: https://codereview.chromium.org/111293002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239849 0039d316-1c4b-4281-b951-d872f2087c98
[chromedriver] Fix uninitialized android capability.

BUG=None
TEST=None
TBR=frankf@chromium.org
NOTRY=True

Review URL: https://codereview.chromium.org/112063002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239850 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239850