chromium_tests: make IsolatedScript use run_isolated directly, not runtest

scripts/slave/recipe_modules/chromium_tests/steps.py

 # Copyright 2014 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 re
 import string
 
 
 class Test(object):
   """
@@ skipping 904 matching lines @@
   def compile_targets(self, _):
     return [self.target_name]
 
   # TODO(nednguyen, kbr): figure out what to do with Android.
   # (crbug.com/533480)
   def run(self, api, suffix):
     # Copy the list because run can be invoked multiple times and we modify
     # the local copy.
     args = self._args[:]
 
-    kwargs = {}
     # TODO(nednguyen, kbr): define contract with the wrapper script to rerun
     # a subset of the tests. (crbug.com/533481)
+
     json_results_file = api.json.output()
+    args.extend(
+        ['--isolated-script-test-output', json_results_file])
+
     step_test_data = lambda: api.json.test_api.output(
         {'valid': True, 'failures': []})
-    kwargs['name'] = self._step_name(suffix)
-    kwargs['args'] = args
-    kwargs['args'].extend(
-        ['--isolated-script-test-output', json_results_file])
-    kwargs['step_test_data'] = step_test_data
-    kwargs['xvfb'] = True
-    kwargs['test_type'] = self.name
-    kwargs.update(self._runtest_kwargs)
 
     try:
-      # TODO(nednguyen, kbr):
-      #  Replace runtest usage here with a better alternative.
-      # (crbug.com/533479)
-      # Figure out whether we need to get revision and webkit_revision, and
-      # if so, where to get them from. (crbug.com/533141)
-      api.isolate.runtest(self.target_name, None, None, **kwargs)
+      api.isolate.run_isolated(
+          self.name,
+          api.isolate.isolated_tests[self.target_name],
+          args,
+          step_test_data=step_test_data)
     finally:
       self._test_runs[suffix] = api.step.active_result
       if self.has_valid_results(api, suffix):
         self._test_runs[suffix].presentation.step_text += (
             api.test_utils.format_step_text([
               ['failures:', self.failures(api, suffix)]
             ]))
 
     return self._test_runs[suffix]
 
@@ skipping 700 matching lines @@
   def run(self, api, suffix):
     api.chromium_android.coverage_report(upload=False)
     api.chromium_android.get_changed_lines_for_revision()
     api.chromium_android.incremental_coverage_report()
 
 
 GOMA_TESTS = [
   GTestTest('base_unittests'),
   GTestTest('content_unittests'),
 ]