Enable ninja_confirm_noop by default

scripts/slave/recipe_modules/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.
 
 import pipes
 
 from recipe_engine.config import config_item_context, ConfigGroup
 from recipe_engine.config import Dict, List, Single, Static, Set, BadConf
 from recipe_engine.config_types import Path
 
@@ skipping 215 matching lines @@
 def win_analyze(c):
   c.gyp_env.GYP_DEFINES['win_analyze'] = '1'
   c.gyp_env.GYP_DEFINES['fastbuild'] = '2'
   c.gyp_env.GYP_DEFINES['use_goma'] = 0
 
 @config_ctx(group='builder')
 def ninja(c):
   if c.TARGET_PLATFORM == 'ios':
     c.gyp_env.GYP_GENERATORS.add('ninja')
 
+  if c.TARGET_PLATFORM != 'android':
+    ninja_confirm_noop(c)
+
   c.compile_py.build_tool = 'ninja'
 
   out_path = 'out'
   if c.TARGET_CROS_BOARD:
     out_path += '_%s' % (c.TARGET_CROS_BOARD,)
   c.build_dir = Path('[CHECKOUT]', out_path)
 
 @config_ctx(group='builder')
 def msvs(c):
   if c.HOST_PLATFORM != 'win':  # pragma: no cover
@@ skipping 539 matching lines @@
 def chromium_deterministic_build(c):
   c.gyp_env.GYP_DEFINES['dont_embed_build_metadata'] = 1
 
 @config_ctx()
 def chromium_mac_sdk_10_10(c):
   c.gyp_env.GYP_DEFINES['mac_sdk_min='] = '10.10'
 
 @config_ctx(includes=['chromium_clang'])
 def cast_linux(c):
   c.gyp_env.GYP_DEFINES['chromecast'] = 1