[iOS] Preserve global symbols when calling strip (-x) on today extensions.

pylib/gyp/xcode_emulation.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 This module contains classes that help to emulate xcodebuild behavior on top of
 other build systems, such as make and ninja.
 """
 
 import copy
@@ skipping 920 matching lines @@
     """Returns a list of shell commands that contain the shell commands
     neccessary to strip this target's binary. These should be run as postbuilds
     before the actual postbuilds run."""
     self.configname = configname
 
     result = []
     if (self._Test('DEPLOYMENT_POSTPROCESSING', 'YES', default='NO') and
         self._Test('STRIP_INSTALLED_PRODUCT', 'YES', default='NO')):
 
       default_strip_style = 'debugging'
-      if self.spec['type'] == 'loadable_module' and self._IsBundle():
+      if self.spec['type'] == 'loadable_module' and self._IsBundle() or
+          self._IsIosAppExtension():

[Nico, 2016/02/05 01:43:00]

Hm, are app extensions not of type loadable_module? If they are, maybe
_IsBundle() needs to return true for them?

         default_strip_style = 'non-global'
       elif self.spec['type'] == 'executable':
         default_strip_style = 'all'
 
       strip_style = self._Settings().get('STRIP_STYLE', default_strip_style)
       strip_flags = {
         'all': '',
         'non-global': '-x',
         'debugging': '-S',
       }[strip_style]
@@ skipping 689 matching lines @@
       if toolset == 'target':
         iphoneos_config_dict['xcode_settings']['SDKROOT'] = 'iphoneos'
   return targets
 
 def CloneConfigurationForDeviceAndEmulator(target_dicts):
   """If |target_dicts| contains any iOS targets, automatically create -iphoneos
   targets for iOS device builds."""
   if _HasIOSTarget(target_dicts):
     return _AddIOSDeviceConfigurations(target_dicts)
   return target_dicts