rebaseline-cl: trigger all try jobs in one invocation of git cl try.

third_party/WebKit/Tools/Scripts/webkitpy/tool/commands/rebaseline_cl_unittest.py

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import json
 import optparse
 
 from webkitpy.common.net.buildbot import Build
 from webkitpy.common.net.rietveld import Rietveld
 from webkitpy.common.net.web_mock import MockWeb
@@ skipping 166 matching lines @@
                 [['python', 'echo', 'rebaseline-test-internal', '--suffixes', 'txt',
                   '--builder', 'MOCK Try Win', '--test', 'fast/dom/prototype-taco.html', '--build-number', '5000']],
                 [['python', 'echo', 'optimize-baselines', '--suffixes', 'txt', 'fast/dom/prototype-taco.html']]
             ])
 
     def test_trigger_jobs_for_missing_builds_empty_list(self):
         # Passing in no builds implies that no try jobs were started.
         self.assertTrue(self.command.trigger_jobs_for_missing_builds([]))
         self.assertEqual(
             self.tool.executive.calls,
-            [['git', 'cl', 'try', '-b', 'MOCK Try Linux'], ['git', 'cl', 'try', '-b', 'MOCK Try Win']])
+            [['git', 'cl', 'try', '-b', 'MOCK Try Linux', '-b', 'MOCK Try Win']])
         self.assertLog([
             'INFO: Triggering try jobs for:\n',
             'INFO:   MOCK Try Linux\n',
             'INFO:   MOCK Try Win\n',
         ])
 
     def test_trigger_jobs_for_missing_builds_started_and_successful(self):
         # A build number of None implies that a job has been started but not finished yet.
         self.assertTrue(self.command.trigger_jobs_for_missing_builds([
             Build('MOCK Try Linux', None),
             Build('MOCK Try Win', 123),
         ]))
         self.assertEqual(self.tool.executive.calls, [])
         self.assertLog([
             'INFO: There are existing pending builds for:\n',
             'INFO:   MOCK Try Linux\n',
         ])
 
     def test_trigger_jobs_for_missing_builds_one_started(self):
         self.assertTrue(self.command.trigger_jobs_for_missing_builds([
             Build('MOCK Try Linux', None),
         ]))
         self.assertEqual(self.tool.executive.calls, [['git', 'cl', 'try', '-b', 'MOCK Try Win']])
         self.assertLog([
             'INFO: There are existing pending builds for:\n',
             'INFO:   MOCK Try Linux\n',
             'INFO: Triggering try jobs for:\n',
             'INFO:   MOCK Try Win\n',
         ])