Add ios-simulator-cronet to tryserver.chromium.mac

masters/master.tryserver.chromium.mac/slaves.cfg

 # -*- python -*-
 # ex: set syntax=python:
 # 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.
 
 # See master.experimental/slaves.cfg for documentation.
 
 def mac():
   cq_slaves = (
@@ skipping 199 matching lines @@
     {
       'master': 'TryServerChromiumMac',
       'builder': cq_builders_rel,
       'hostname': slave,
       'preferred_builder': cq_builders_rel[i % len(cq_builders_rel)],
       'os': 'mac',
       'version': '10.10',
       'pool': 'ios_cq_rel',
     } for slave in cq_slaves_rel]
 
-  # TODO(lliabraa): Add test_slaves once we're actually running iOS tests on
-  # the bots.
+  extra_builders = [
+    {
+      'master': 'TryServerChromiumMac',
+      'builder': 'ios-simulator-cronet',
+      'hostname': 'vm667-m4',
+      'os': 'mac',
+      'version': '10.10',
+    },
+  ]
 
-  return compile_slaves_dbg + compile_slaves_rel
+  return compile_slaves_dbg + compile_slaves_rel + extra_builders
 
 
 slaves = mac() + ios()