V8 buildbot: change sample to d8 from shell.

scripts/slave/compile.py

 #!/usr/bin/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.
 
 """A tool to build chrome, executed by buildbot.
 
   When this is run, the current directory (cwd) should be the outer build
   directory (e.g., chrome-release/build/).
 
@@ skipping 438 matching lines @@
   else:
     command = ['python', '../third_party/scons/scons.py']
 
   env = os.environ.copy()
   if sys.platform == 'linux2':
     common_linux_settings(command, options, env)
   else:
     command.extend(['-k'])
 
   command.extend([
-      # Force scons to always check for dependency changes.
       'mode=' + options.target,
-      'sample=shell'
+      'd8'
   ])
 
   command.extend(options.build_args + args)
   return chromium_utils.RunCommand(command, env=env)
 
 
 
 def main_win(options, args):
   """Interprets options, clobbers object files, and calls the build tool.
   """
@@ skipping 189 matching lines @@
     main = build_tool_map.get(options.build_tool)
     if not main:
       sys.stderr.write('Unknown build tool %s.\n' % repr(options.build_tool))
       return 2
 
   return main(options, args)
 
 
 if '__main__' == __name__:
   sys.exit(real_main())