Fix slash direction on Windows.

utils/compiler/buildbot.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.
 
 """Dart frog buildbot steps
 
 Runs tests for the frog or dart2js compiler.
 """
@@ skipping 210 matching lines @@
     # TODO(ngeoffray): We should install selenium on the buildbot.
     runtime = 'drt'
   elif (runtime == 'ff' or runtime == 'chrome') and is_buildbot:
     # Print out browser version numbers if we're running on the buildbot (where
     # we know the paths to these browser installations).
     version_query_string = '"%s" --version' % GetPath(runtime)
     if runtime == 'ff' and system == 'win7':
       version_query_string += '| more'
     elif runtime == 'chrome' and system == 'win7':
       version_query_string = ('''reg query "HKCU\\Software\\Microsoft\\''' + 
-          '''Windows\\CurrentVersion\\Uninstall\\Google Chrome" \\v Version''')
+          '''Windows\\CurrentVersion\\Uninstall\\Google Chrome" /v Version''')
     p = subprocess.Popen(version_query_string,
         stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
     output, stderr = p.communicate()
     output = output.split()
     try:
       print 'Version of %s: %s' % (runtime, output[-1])
     except IndexError:
       # Failed to obtain version information. Continue running tests.
       pass
 
@@ skipping 101 matching lines @@
   if status == 0 and option != 'checked' and runtime == 'd8':
     status = TestCompiler(compiler, runtime, mode, system, option,
                           test_flags + ['--checked'], is_buildbot)
 
   if runtime != 'd8': CleanUpTemporaryFiles(system, runtime)
   if status != 0: print '@@@STEP_FAILURE@@@'
   return status
 
 if __name__ == '__main__':
   sys.exit(main())