Add win8_chromium_rel to the default set of try jobs.

PRESUBMIT.py

 # 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.
 
 """Top-level presubmit script for Chromium.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl.
 """
 
@@ skipping 1472 matching lines @@
       'mac_chromium_compile_dbg': ['defaulttests'],
       'mac_chromium_rel_swarming': ['defaulttests'],
       'mac_gpu': ['defaulttests'],
       'mac_nacl_sdk_build': ['compile'],
       'win_chromium_compile_dbg': ['defaulttests'],
       'win_chromium_dbg': ['defaulttests'],
       'win_chromium_rel_swarming': ['defaulttests'],
       'win_chromium_x64_rel_swarming': ['defaulttests'],
       'win_gpu': ['defaulttests'],
       'win_nacl_sdk_build': ['compile'],
+      'win8_chromium_rel': ['defaulttests'],
   }
 
   if bots:
     filtered_builders_and_tests = dict((bot, set(builders_and_tests[bot]))
                                        for bot in bots)
   else:
     filtered_builders_and_tests = dict(
         (bot, set(tests))
         for bot, tests in builders_and_tests.iteritems())
 
@@ skipping 31 matching lines @@
 
   if all(re.search(r'\.(m|mm)$|(^|[\\\/_])mac[\\\/_.]', f) for f in files):
     return GetDefaultTryConfigs([
         'mac_chromium_compile_dbg',
         'mac_chromium_rel_swarming',
     ])
   if all(re.search('(^|[/_])win[/_.]', f) for f in files):
     return GetDefaultTryConfigs([
         'win_chromium_dbg',
         'win_chromium_rel_swarming',
+        'win8_chromium_rel',
     ])
   if all(re.search(r'(^|[\\\/_])android[\\\/_.]', f) for f in files):
     return GetDefaultTryConfigs([
         'android_aosp',
         'android_clang_dbg',
         'android_dbg_tests_recipe',
     ])
   if all(re.search(r'[\\\/_]ios[\\\/_.]', f) for f in files):
     return GetDefaultTryConfigs(['ios_rel_device', 'ios_dbg_simulator'])
 
   builders = [
       'android_chromium_gn_compile_rel',
       'android_clang_dbg',
       'android_dbg_tests_recipe',
       'ios_dbg_simulator',
       'ios_rel_device',
       'linux_chromium_chromeos_rel_swarming',
       'linux_chromium_clang_dbg',
       'linux_chromium_gn_rel',
       'linux_chromium_rel_swarming',
       'linux_gpu',
       'mac_chromium_compile_dbg',
       'mac_chromium_rel_swarming',
       'mac_gpu',
       'win_chromium_compile_dbg',
       'win_chromium_rel_swarming',
       'win_chromium_x64_rel_swarming',
       'win_gpu',
+      'win8_chromium_rel',
   ]
 
   # Match things like path/aura/file.cc and path/file_aura.cc.
   # Same for chromeos.
   if any(re.search(r'[\\\/_](aura|chromeos)', f) for f in files):
     builders.extend([
         'linux_chromeos_asan',
         'linux_chromium_chromeos_clang_dbg'
     ])
 
   # If there are gyp changes to base, build, or chromeos, run a full cros build
   # in addition to the shorter linux_chromeos build. Changes to high level gyp
   # files have a much higher chance of breaking the cros build, which is
   # differnt from the linux_chromeos build that most chrome developers test
   # with.
   if any(re.search('^(base|build|chromeos).*\.gypi?$', f) for f in files):
     builders.extend(['cros_x86'])
 
   # The AOSP bot doesn't build the chrome/ layer, so ignore any changes to it
   # unless they're .gyp(i) files as changes to those files can break the gyp
   # step on that bot.
   if (not all(re.search('^chrome', f) for f in files) or
       any(re.search('\.gypi?$', f) for f in files)):
     builders.extend(['android_aosp'])
 
   return GetDefaultTryConfigs(builders)