Fix --gtest_output=xml: support.

tests/gtest_fake/gtest_fake_xml.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Simulate a passing google-test executable.
 
 http://code.google.com/p/googletest/
 
 The data was generated with:
@@ skipping 102 matching lines @@
   # Ignored, exists to fake browser_tests.
   parser.add_option('--gtest_print_time')
   # Ignored, exists to fake browser_tests.
   parser.add_option('--lib')
   parser.add_option('--trim-xml', action='store_true')
   options, args = parser.parse_args()
   if args:
     parser.error('Failed to process args %s' % args)
   if options.gtest_output:
     if not options.gtest_output.startswith('xml:'):
-      parser.error('--gtest_output value must start with xm:')
+      parser.error('--gtest_output value must start with xml:')
     options.gtest_output = options.gtest_output[len('xml:'):]
+    if (not os.path.isabs(options.gtest_output) or
+        not options.gtest_output[-1] == os.path.sep):
+      parser.error('Require strict absolute path ending with %s' % os.path.sep)
 
   if options.trim_xml:
     trim_xml()
     return 0
 
   if options.gtest_list_tests:
     for fixture, cases in TESTS.iteritems():
       print '%s.' % fixture
       for case in cases:
         print '  ' + case
@@ skipping 26 matching lines @@
     else:
       filename = case + '.xml'
       out = os.path.join(options.gtest_output, filename)
       shutil.copyfile(os.path.join(ROOT_DIR, filename), out)
       return 0
   return 2
 
 
 if __name__ == '__main__':
   sys.exit(main())