Handle content_shell failing to start on android as device going offline.

This should then take advantage of the new "fault-tolerance" mode in run-webkit-tests and redirect all the tests queued for that device to another one.

Note that this behavior isn't ideal because it's possible content_shell could just be broken (and it's not a device-level issue at all), but this is worth giving a shot.

TBR=ojan@chromium.org, peter@chromium.org
BUG=305040, 306313

Review URL: https://codereview.chromium.org/27046003

git-svn-id: svn://svn.chromium.org/blink/trunk@159466 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add a flaky SVG line.

TBR=pdr@chromium.org

Review URL: https://codereview.chromium.org/26905007

git-svn-id: svn://svn.chromium.org/blink/trunk@159467 bbb929c8-8fbe-4397-9dbb-9b2b20218538