Add several unit tests to iOS Simulator try builder.

masters/master.tryserver.chromium/master.cfg

 # -*- python -*-
 # ex: set syntax=python:
 # Copyright (c) 2012 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.
 
 # READ THIS:
 # See http://dev.chromium.org/developers/testing/chromium-build-infrastructure
 
 from buildbot.scheduler import Triggerable
@@ skipping 751 matching lines @@
   builder_name='ios_rel_device',
   target='Release',
   options=[
       '--',
       '-project', '../build/all.xcodeproj',
       '-sdk', 'iphoneos6.0',
       '-target', 'All',
   ],
   factory_properties={
       'app_name': 'Chromium.app',
+      'test_platform': 'ios-simulator',
       'gclient_deps': 'ios',
   },
   gclient_env={
       'GYP_DEFINES': 'component=static_library OS=ios chromium_ios_signing=0',
       'GYP_GENERATOR_FLAGS': 'xcode_project_version=3.2',
   },
 )
 
 b_ios_dbg_simulator = CreateBuilder(
   platform='ios',
@@ skipping 1050 matching lines @@
 ####### PROJECT IDENTITY
 
 # The 'projectURL' string will be used to provide a link
 # from buildbot HTML pages to your project's home page.
 c['projectURL'] = 'http://dev.chromium.org/developers/testing/try-server-usage'
 
 # Buildbot master url:
 c['buildbotURL'] = 'http://build.chromium.org/p/tryserver.chromium/'
 
 # vi: set ts=4 sts=2 sw=2 et: