Each test was changing the active playback sink port to perform the test on that port, but then not setting the port back to its original setting after the test.  This could cause another test that expects the port to be set to the system default to fail.  It was also leaving the system in a state where audio would not play out the speakers if the last test done was on a non-speaker port.

BUG=cros partner 724
TEST=System should still play audio fine after completing tests

Review URL: http://codereview.chromium.org/3293004
1 file changed