Adding more MSE tests.

BUG=
R=wolenetz, acolwell

Review URL: https://codereview.chromium.org/419673007

git-svn-id: svn://svn.chromium.org/blink/trunk@179273 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add instructions for pushing TestResultServer and GardeningServer.

NOTRY=true
r=pdr@chromium.org,szager@chromium.org

Review URL: https://codereview.chromium.org/437443002

git-svn-id: svn://svn.chromium.org/blink/trunk@179274 bbb929c8-8fbe-4397-9dbb-9b2b20218538
ServiceWorker: Remove unnecessary typedef


BUG=396400
TEST=compile (no behavioral change)

Review URL: https://codereview.chromium.org/427113003

git-svn-id: svn://svn.chromium.org/blink/trunk@179275 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix the default value of offerToReceiveAudio and offerToReceiveVideo.
According to the most recent discussion on https://github.com/rtcweb-wg/jsep/issues/66, JS should not be allowed to set negative value and the 'unset' state needs to be passed down as a special value '-1'.

BUG=https://code.google.com/p/webrtc/issues/detail?id=3282

Review URL: https://codereview.chromium.org/429893008

git-svn-id: svn://svn.chromium.org/blink/trunk@179276 bbb929c8-8fbe-4397-9dbb-9b2b20218538