Support --gtest_filter for try jobs.

buildbot/scripts/master/try_job_base.py

Index: buildbot/scripts/master/try_job_base.py
===================================================================
--- buildbot/scripts/master/try_job_base.py	(revision 46112)
+++ buildbot/scripts/master/try_job_base.py	(working copy)
@@ -50,7 +50,8 @@
     branch = options.get('branch', None)
     revision = options.get('revision', None)
     buildset_id = options.get('reason', '%s: %s' % (user, job_name))
-    tests = [item for item in options.get('tests', '').split(',') if item]
+    testfilters = [item for item in options.get('testfilter', '').split(',')
+                   if item]
     project = options.get('project', self.pools.default_pool_name)
 
     # Code review infos. Enforce numbers.
@@ -92,8 +93,8 @@
     props.updateFromProperties(self.properties)
     if clobber:
       props.setProperty('clobber', True, 'Scheduler')
-    if tests:
-      props.setProperty('tests', tests, 'Scheduler')
+    if testfilters:
+      props.setProperty('testfilters', testfilters, 'Scheduler')
     return builder_names, jobstamp, buildset_id, props
 
   def SubmitJob(self, options):