Add timestamp=none to codesign flags.

pylib/gyp/mac_tool.py

 #!/usr/bin/env python
 # 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.
 
 """Utility functions to perform Xcode-style build steps.
 
 These functions are executed via gyp-mac-tool when using the Makefile generator.
 """
 
@@ skipping 348 matching lines @@
          and copy it into the bundle as embedded.mobileprovision,
       2. copy Entitlements.plist from user or SDK next to the bundle,
       3. code sign the bundle.
     """
     substitutions, overrides = self._InstallProvisioningProfile(
         provisioning, self._GetCFBundleIdentifier())
     entitlements_path = self._InstallEntitlements(
         entitlements, substitutions, overrides)
     subprocess.check_call([
         'codesign', '--force', '--sign', key, '--entitlements',
-        entitlements_path, os.path.join(
+        entitlements_path, '--timestamp=none', os.path.join(
             os.environ['TARGET_BUILD_DIR'],
             os.environ['FULL_PRODUCT_NAME'])])
 
   def _InstallProvisioningProfile(self, profile, bundle_identifier):
     """Installs embedded.mobileprovision into the bundle.
 
     Args:
       profile: string, optional, short name of the .mobileprovision file
         to use, if empty or the file is missing, the best file installed
         will be used
@@ skipping 198 matching lines @@
         data = data.replace('$(%s)' % key, value)
       return data
     if isinstance(data, list):
       return [self._ExpandVariables(v, substitutions) for v in data]
     if isinstance(data, dict):
       return {k: self._ExpandVariables(data[k], substitutions) for k in data}
     return data
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))