Set LANG variable in test_env.py

NOTRY=true
BUG=


Review URL: https://chromiumcodereview.appspot.com/10825322

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@151493 0039d316-1c4b-4281-b951-d872f2087c98

testing/test_env.py

@@ -30,7 +30,7 @@ def run_executable(cmd, env):
     - Reuses sys.executable automatically.
   """
   # Many tests assume a English interface...
-  env['LANGUAGE'] = 'en_US.UTF-8'
+  env['LANG'] = 'en_US.UTF-8'
   # Used by base/base_paths_linux.cc as an override. Just make sure the default
   # logic is used.
   env.pop('CR_SOURCE_ROOT', None)