Enable browser tests with glibc.

tools/browser_tester/browser_tester.py

Index: tools/browser_tester/browser_tester.py
===================================================================
--- tools/browser_tester/browser_tester.py	(revision 6583)
+++ tools/browser_tester/browser_tester.py	(working copy)
@@ -38,6 +38,11 @@
                     metavar='DEST SRC',
                     help='Add file SRC to be served from the HTTP server, '
                     'to be made visible under the path DEST.')
+  parser.add_option('--serving_dir', dest='serving_dirs', action='append',
+                    type='string', default=[],
+                    metavar='DIRNAME',
+                    help='Add directory DIRNAME to be served from the HTTP '
+                    'server to be made visible under the root.')
   parser.add_option('--test_arg', dest='test_args', action='append',
                     type='string', nargs=2, default=[],
                     metavar='KEY VALUE',
@@ -157,7 +162,8 @@
                    dict(options.map_redirects),
                    options.allow_404,
                    options.bandwidth,
-                   listener)
+                   listener,
+                   options.serving_dirs)
 
   browser = browsertester.browserlauncher.ChromeLauncher(options)
 
@@ -223,6 +229,7 @@
   options, args = parser.parse_args()
 
   if len(args) != 0:
+    print args
     parser.error('Invalid arguments')
 
   # Validate the URL