Changed asan host detection to use short hostname

mini11-a1.chrome.corp.google.com is actually mini11-a1.perf.chromium.org, but
lets just use short hostnames (hostname -s) so that the domain doesn't matter.

BUG=170629, 174873

Review URL: https://codereview.chromium.org/12285006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182815 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed