libyuv: Remove lsan for Mac since it's not supported.

scripts/slave/recipe_modules/libyuv/chromium_config.py

 # Copyright 2014 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
 
 import DEPS
 CONFIG_CTX = DEPS['chromium'].CONFIG_CTX
 from recipe_engine.config_types import Path
 
 
 @CONFIG_CTX(includes=['chromium'])
 def libyuv(c):
   _libyuv_common(c)
 
   c.runtests.memory_tests_runner = Path('[CHECKOUT]', 'tools',
                                         'valgrind-libyuv', 'libyuv_tests',
                                         platform_ext={'win': '.bat',
                                                       'mac': '.sh',
                                                       'linux': '.sh'})
 
 @CONFIG_CTX(includes=['chromium_clang'])
 def libyuv_clang(c):
   _libyuv_common(c)
 
-@CONFIG_CTX(includes=['chromium_linux_asan', 'lsan'])
-def libyuv_asan(c):
-  _libyuv_common(c)
-
 @CONFIG_CTX(includes=['android'])
 def libyuv_android(c):
   pass
 
 @CONFIG_CTX(includes=['android_clang'])
 def libyuv_android_clang(c):
   pass
 
 @CONFIG_CTX(includes=['chromium', 'static_library'])
 def libyuv_ios(c):
   if c.HOST_PLATFORM != 'mac':
     raise BadConf('Only "mac" host platform is supported for iOS (got: "%s")' %
                   c.HOST_PLATFORM)  # pragma: no cover
   if c.TARGET_PLATFORM != 'ios':
     raise BadConf('Only "ios" target platform is supported (got: "%s")' %
                   c.TARGET_PLATFORM)  # pragma: no cover
   c.build_config_fs = c.BUILD_CONFIG + '-iphoneos'
 
   gyp_defs = c.gyp_env.GYP_DEFINES
   gyp_defs['OS'] = c.TARGET_PLATFORM
   if c.TARGET_BITS == 64:
     gyp_defs['target_subarch'] = 'arm64'
 
   _libyuv_common(c)
 
 def _libyuv_common(c):
   c.compile_py.default_targets = ['All']