V8: Turn xcode builder into xcode-ninja builder

scripts/slave/recipe_modules/v8/chromium_config.py

 # Copyright 2013 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.
 
 from recipe_engine.config import BadConf
 from recipe_engine.config_types import Path
 from recipe_engine import config as recipe_config
 
 import DEPS
 CONFIG_CTX = DEPS['chromium'].CONFIG_CTX
@@ skipping 104 matching lines @@
 @CONFIG_CTX(includes=['ninja'])
 def v8_ninja(c):
   c.gyp_env.GYP_GENERATORS.add('ninja')
 
   if c.HOST_PLATFORM == 'win' and c.TARGET_BITS == 64:
     # Windows requires 64-bit builds to be in <dir>_x64 with ninja. See
     # crbug.com/470681.
     c.build_config_fs = c.BUILD_CONFIG + '_x64'
 
 
+@CONFIG_CTX(includes=['ninja'])
+def v8_xcode_ninja(c):
+  c.gyp_env.GYP_GENERATORS.add('ninja')
+  c.gyp_env.GYP_GENERATORS.add('xcode-ninja')
+
+
 # Work-around for obtaining the right build dir on linux slave that trigger
 # windows 64 bit swarming jobs.
 @CONFIG_CTX(includes=['v8'])
 def use_windows_swarming_slaves(c):
   if c.TARGET_BITS == 64:
     c.build_config_fs = c.BUILD_CONFIG + '_x64'
 
 
 @CONFIG_CTX(includes=['v8', 'dcheck'])
 def no_dcheck(c):
@@ skipping 68 matching lines @@
 def vtunejit(c):
   c.gyp_env.GYP_DEFINES['v8_enable_vtunejit'] = 1
 
 
 @CONFIG_CTX(includes=['v8'])
 def x87(c):
   # TODO(machenbach): Chromium does not support x87 yet. With the current
   # configuration, target_arch can't be set through a parameter as ARCH=intel
   # and BITS=32 is ambigue with x87.
   c.gyp_env.GYP_DEFINES['v8_target_arch'] = 'x87'