Support running eg tests with xctestrun file on devices.

ios/build/bots/scripts/xctest_utils.py

 # Copyright (c) 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 os
 import re
 import tempfile
 
 
@@ skipping 194 matching lines @@
       self._current_test = ''
       return
 
     # Is it the start of a test?
     results = self._test_start.match(line)
     if results:
       if self._current_test:
         if self._test_status[self._current_test][0] == 'started':
           self._test_status[self._current_test] = (
               'timeout', self._failure_description)
-      test_name = '%s.%s' % (results.group(1), results.group(2))
+      test_name = '%s/%s' % (results.group(1), results.group(2))
       self._test_status[test_name] = ('started', ['Did not complete.'])
       self._current_test = test_name
       if self.retrying_failed:
         self._failure_description = self._test_status[test_name][1]
         self._failure_description.extend(['', 'RETRY OUTPUT:', ''])
       else:
         self._failure_description = []
       return
 
     # Is it a test success line?
     results = self._test_ok.match(line)
     if results:
-      test_name = '%s.%s' % (results.group(1), results.group(2))
+      test_name = '%s/%s' % (results.group(1), results.group(2))
       status = self._StatusOfTest(test_name)
       if status != 'started':
         self._RecordError(line, 'success while in status %s' % status)
       if self.retrying_failed:
         self._test_status[test_name] = ('warning', self._failure_description)
       else:
         self._test_status[test_name] = ('OK', [])
       self._failure_description = []
       self._current_test = ''
       return
 
     # Is it a test failure line?
     results = self._test_fail.match(line)
     if results:
-      test_name = '%s.%s' % (results.group(1), results.group(2))
+      test_name = '%s/%s' % (results.group(1), results.group(2))
       status = self._StatusOfTest(test_name)
       if status not in ('started', 'failed', 'timeout'):
         self._RecordError(line, 'failure while in status %s' % status)
       # Don't overwrite the failure description when a failing test is listed a
       # second time in the summary, or if it was already recorded as timing
       # out.
       if status not in ('failed', 'timeout'):
         self._test_status[test_name] = ('failed', self._failure_description)
       self._failure_description = []
       self._current_test = ''
       return
 
     # Is it the start of the retry tests?
     results = self._retry_message.match(line)
     if results:
       self.retrying_failed = True
       return
 
     # Random line: if we're in a test, collect it for the failure description.
     # Tests may run simultaneously, so this might be off, but it's worth a try.
     # This also won't work if a test times out before it begins running.
     if self._current_test:
       self._failure_description.append(line)