Prepare for using ninja for win64.

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 304 matching lines @@
   return result
 
 
 def RandomSeed():
   seed = 0
   while not seed:
     seed = random.SystemRandom().randint(-2147483648, 2147483647)
   return seed
 
 
+def BuildbotToV8Mode(config):
+  """Convert buildbot build configs to configs understood by the v8 runner.
+
+  V8 configs are always lower case and without the additional _x64 suffix for
+  64 bit builds on windows with ninja.
+  """
+  mode = config[:-4] if config.endswith('_x64') else config
+  return mode.lower()
+
 def ProcessOptions(options):
   global VARIANT_FLAGS
   global VARIANTS
 
   # Architecture and mode related stuff.
   if options.arch_and_mode:
     options.arch_and_mode = [arch_and_mode.split(".")
         for arch_and_mode in options.arch_and_mode.split(",")]
     options.arch = ",".join([tokens[0] for tokens in options.arch_and_mode])
     options.mode = ",".join([tokens[1] for tokens in options.arch_and_mode])
   options.mode = options.mode.split(",")
   for mode in options.mode:
-    if not mode.lower() in MODES:
+    if not BuildbotToV8Mode(mode) in MODES:
       print "Unknown mode %s" % mode
       return False
   if options.arch in ["auto", "native"]:
     options.arch = ARCH_GUESS
   options.arch = options.arch.split(",")
   for arch in options.arch:
     if not arch in SUPPORTED_ARCHS:
       print "Unknown architecture %s" % arch
       return False
 
@@ skipping 176 matching lines @@
 
 def Execute(arch, mode, args, options, suites, workspace):
   print(">>> Running tests for %s.%s" % (arch, mode))
 
   shell_dir = options.shell_dir
   if not shell_dir:
     if options.buildbot:
       # TODO(machenbach): Get rid of different output folder location on
       # buildbot. Currently this is capitalized Release and Debug.
       shell_dir = os.path.join(workspace, options.outdir, mode)
-      mode = mode.lower()
+      mode = BuildbotToV8Mode(mode)
     else:
       shell_dir = os.path.join(
           workspace,
           options.outdir,
           "%s.%s" % (arch, MODES[mode]["output_folder"]),
       )
   shell_dir = os.path.relpath(shell_dir)
 
   # Populate context object.
   mode_flags = MODES[mode]["flags"]
@@ skipping 138 matching lines @@
   exit_code = runner.Run(options.j)
   overall_duration = time.time() - start_time
 
   if options.time:
     verbose.PrintTestDurations(suites, overall_duration)
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())