Temporarily hack test frameworks to use the temporary flag. :(

test/mozilla/testcfg.py

 # Copyright 2008 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 58 matching lines @@
     return "%s mozilla %s" % (self.mode, self.GetName())
 
   def IsFailureOutput(self, output):
     if output.exit_code != 0:
       return True
     return 'FAILED!' in output.stdout
 
   def GetCommand(self):
     result = self.context.GetVmCommand(self, self.mode) + \
        [ '--expose-gc', join(self.root, 'mozilla-shell-emulation.js') ]
+    result += [ '--es5_readonly' ]  # Temporary hack until we can remove flag
     result += self.framework
     result.append(self.filename)
     return result
 
   def GetName(self):
     return self.path[-1]
 
   def GetSource(self):
     return open(self.filename).read()
 
@@ skipping 39 matching lines @@
     return ['d8']
 
   def GetTestStatus(self, sections, defs):
     status_file = join(self.root, 'mozilla.status')
     if exists(status_file):
       test.ReadConfigurationInto(status_file, sections, defs)
 
 
 def GetConfiguration(context, root):
   return MozillaTestConfiguration(context, root)