Add a try slave
Add a try slave

BUG=chromium:316260
TEST=local start
R=petermayo@chromium.org

Review URL: https://codereview.chromium.org/69003003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@234305 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build