Use iossim/test-without-building for Earlgrey tests.

scripts/slave/recipe_modules/ios/api.py

 # Copyright 2015 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 copy
 
 from recipe_engine import recipe_api
 
 
 class iOSApi(recipe_api.RecipeApi):
@@ skipping 380 matching lines @@
         self.package_repo_resource(
           'scripts', 'slave', 'ios', 'run.py'),
         '--app', self.m.path.join(
           self.most_recent_app_dir,
           '%s.app' % test['app'],
         ),
         '--json_file', self.m.json.output(),
       ]
       if test.get('xctest'):
         cmd.extend([
-          '--test-host', test['app'],
-          '--dummyproj', self.package_repo_resource(
-            'scripts', 'slave', 'ios', 'TestProject', 'TestProject.xcodeproj'),
+          '--xctest', self.m.path.join(
+            self.most_recent_app_dir,
+            '%s.app' % test['app'],
+            'PlugIns',
+            '%s.xctest' % test['xctest'],
+          ),
         ])
 
       step_name = test['app']
 
       if self.platform == 'simulator':
         cmd.extend([
           '--iossim', self.m.path['slave_build'].join(self.most_recent_iossim),
           '--platform', test['device type'],
           '--version', test['os'],
         ])
@@ skipping 348 matching lines @@
         self.configuration,
         'iossim',
       ),
       'ninja': self.m.path.join(
         'src',
          build_dir,
          '%s-%s' % (self.configuration, platform),
          'iossim',
       ),
     }[self.compiler]