Move recipe engine to third_party/recipe_engine.

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 slave.recipe_config import BadConf
-from slave.recipe_config_types import Path
-from slave import recipe_config
+from recipe_engine.recipe_config import BadConf
+from recipe_engine.recipe_config_types import Path
+from recipe_engine import recipe_config
 
 import DEPS
 CONFIG_CTX = DEPS['chromium'].CONFIG_CTX
 
 
 @CONFIG_CTX()
 def v8(c):
   targ_arch = c.gyp_env.GYP_DEFINES.get('target_arch')
   if not targ_arch:  # pragma: no cover
     raise recipe_config.BadConf('v8 must have a valid target_arch.')
@@ skipping 162 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'