Increase test timeout on slow architectures.

tools/run-tests.py

 #!/usr/bin/env python
 #
 # Copyright 2012 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
@@ skipping 275 matching lines @@
       shell_dir = os.path.join(workspace, options.outdir,
                                "%s.%s" % (arch, mode))
   shell_dir = os.path.relpath(shell_dir)
 
   # Populate context object.
   mode_flags = MODE_FLAGS[mode]
   timeout = options.timeout
   if timeout == -1:
     # Simulators are slow, therefore allow a longer default timeout.
     if arch in SLOW_ARCHS:
-      timeout = 2 * TIMEOUT_DEFAULT;
+      timeout = 3 * TIMEOUT_DEFAULT;
     else:
       timeout = TIMEOUT_DEFAULT;
 
   timeout *= TIMEOUT_SCALEFACTOR[mode]
   ctx = context.Context(arch, mode, shell_dir,
                         mode_flags, options.verbose,
                         timeout, options.isolates,
                         options.command_prefix,
                         options.extra_flags)
 
@@ skipping 76 matching lines @@
   except KeyboardInterrupt:
     return 1
 
   if options.time:
     verbose.PrintTestDurations(suites, overall_duration)
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())