rebaseline-cl: Get latest try jobs using git-cl when no --issue given.

third_party/WebKit/Tools/Scripts/webkitpy/tool/commands/rebaseline_cl.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.
 
 """A command to fetch new baselines from try jobs for a Rietveld issue.
 
 This command interacts with the Rietveld API to get information about try jobs
 with layout test results.
 """
 
@@ skipping 46 matching lines @@
         if unstaged_baselines:
             _log.error('Aborting: there are unstaged baselines:')
             for path in unstaged_baselines:
                 _log.error('  %s', path)
             return 1
 
         issue_number = self._get_issue_number(options)
         if not issue_number:
             return 1
 
-        # TODO(qyearsley): Replace this with git cl try-results to remove
-        # dependency on Rietveld. See crbug.com/671684.
-        builds = self.rietveld.latest_try_jobs(issue_number, self._try_bots())
+        # TODO(qyearsley): Remove dependency on Rietveld. See crbug.com/671684.
+        if options.issue:
+            builds = self.rietveld.latest_try_jobs(issue_number, self._try_bots())
+        else:
+            builds = self.git_cl().latest_try_jobs(self._try_bots())
 
         if options.trigger_jobs:
             if self.trigger_jobs_for_missing_builds(builds):
                 _log.info('Please re-run webkit-patch rebaseline-cl once all pending try jobs have finished.')
                 return 1
         if not builds:
             _log.info('No builds to download baselines from.')
 
         _log.debug('Getting results for Rietveld issue %d.', issue_number)
         builds_to_results = self._fetch_results(builds)
@@ skipping 158 matching lines @@
     def _log_test_prefix_list(test_prefix_list):
         """Logs the tests to download new baselines for."""
         if not test_prefix_list:
             _log.info('No tests to rebaseline; exiting.')
             return
         _log.debug('Tests to rebaseline:')
         for test, builds in test_prefix_list.iteritems():
             _log.debug('  %s:', test)
             for build in sorted(builds):
                 _log.debug('    %s', build)