WebRTC: Pin SDK version to 10.9 for Mac and iOS.

scripts/slave/recipe_modules/webrtc/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 RECIPE_MODULES.chromium import CONFIG_CTX
 from slave.recipe_config_types import Path
 
 
 SUPPORTED_TARGET_ARCHS = ('intel', 'arm')
 
 
 @CONFIG_CTX(includes=['chromium'])
 def webrtc(c):
   c.compile_py.default_targets = ['All']
 
   c.runtests.memory_tests_runner = Path('[CHECKOUT]', 'tools',
                                         'valgrind-webrtc', 'webrtc_tests',
                                         platform_ext={'win': '.bat',
                                                       'mac': '.sh',
                                                       'linux': '.sh'})
-  if c.TARGET_PLATFORM == 'mac' and c.TARGET_BITS == 64:
-    c.gyp_env.GYP_DEFINES['mac_sdk'] = '10.7'
+  if c.TARGET_PLATFORM == 'mac':
+    c.gyp_env.GYP_DEFINES['mac_sdk'] = '10.9'
 
 @CONFIG_CTX(includes=['chromium_clang'])
 def webrtc_clang(c):
   c.compile_py.default_targets = ['All']
 
 @CONFIG_CTX(includes=['webrtc_clang'])
 def webrtc_asan(c):
   # We can't use the 'asan' configuration from the chromium recipe module since
   # it's also enabling LSan, which we don't yet support: crbug.com/375154.
   if 'clang' not in c.compile_py.compiler:  # pragma: no cover
@@ skipping 26 matching lines @@
                   c.HOST_PLATFORM)
   if c.TARGET_PLATFORM != 'ios':
     raise BadConf('Only "ios" target platform is supported (got: "%s")' %
                   c.TARGET_PLATFORM)
   c.build_config_fs = c.BUILD_CONFIG + '-iphoneos'
 
   gyp_defs = c.gyp_env.GYP_DEFINES
   gyp_defs['build_with_libjingle'] = 1
   gyp_defs['chromium_ios_signing'] = 0
   gyp_defs['key_id'] = ''
+  gyp_defs['mac_sdk'] = '10.9'
   gyp_defs['target_arch'] = 'armv7'
   gyp_defs['OS'] = c.TARGET_PLATFORM
 
   c.compile_py.default_targets = ['All']
 
 @CONFIG_CTX(includes=['gn'])
 def webrtc_gn(c):
   c.project_generator.args = ['build_with_chromium=false']