Run 2.5x more tests on the WebKit Linux bot as now it's 2.5x faster

tools/valgrind/chrome_tests.py

 #!/usr/bin/env python
 # Copyright (c) 2011 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.
 
 ''' Runs various chrome tests through valgrind_test.py.'''
 
 import glob
 import logging
 import optparse
@@ skipping 479 matching lines @@
                     help="verbose output - enable debug log messages")
   parser.add_option("", "--tool", dest="valgrind_tool", default="memcheck",
                     help="specify a valgrind tool to run the tests under")
   parser.add_option("", "--tool_flags", dest="valgrind_tool_flags", default="",
                     help="specify custom flags for the selected valgrind tool")
   parser.add_option("", "--keep_logs", action="store_true", default=False,
                     help="store memory tool logs in the <tool>.logs directory "
                          "instead of /tmp.\nThis can be useful for tool "
                          "developers/maintainers.\nPlease note that the <tool>"
                          ".logs directory will be clobbered on tool startup.")
-  parser.add_option("-n", "--num_tests", default=200, type="int",
+  parser.add_option("-n", "--num_tests", default=500, type="int",
                     help="for layout tests: # of subtests per run.  0 for all.")
 
   options, args = parser.parse_args()
 
   if options.verbose:
     logging_utils.config_root(logging.DEBUG)
   else:
     logging_utils.config_root()
 
   if not options.test:
     parser.error("--test not specified")
 
   if len(options.test) != 1 and options.gtest_filter:
     parser.error("--gtest_filter and multiple tests don't make sense together")
 
   for t in options.test:
     tests = ChromeTests(options, args, t)
     ret = tests.Run()
     if ret: return ret
   return 0
 
 
 if __name__ == "__main__":
   sys.exit(_main())