[chromedriver] Fix the python test for chromedriver log.

BUG=None
NOTRY=True

Review URL: https://codereview.chromium.org/146133004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246723 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246723
Whitelist more remora channels for stable audio api.

BUG=335729

Review URL: https://codereview.chromium.org/132233020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246724 0039d316-1c4b-4281-b951-d872f2087c98
Run ScreenShutdownTest currectly.
Fixing a lame error in the test.

BUG=NONE

Review URL: https://codereview.chromium.org/136583008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246725 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246725