Don't issue try jobs for OWNERS-only changes.

BUG=None
[email protected]
TEST=PRESUBMIT_test.py, less needless try jobs.
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/11830057

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@176192 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 17e3091..a738477 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -829,7 +829,7 @@
 def GetPreferredTrySlaves(project, change):
   files = change.LocalPaths()
 
-  if not files:
+  if not files or all(re.search(r'[\\/]OWNERS$', f) for f in files):
     return []
 
   if all(re.search('\.(m|mm)$|(^|[/_])mac[/_.]', f) for f in files):