Fix python scripts in src/webkit

webkit/build/webkit_version.py

-#!/usr/bin/python
+#!/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.
 
 '''Reads the Webkit Version.xcconfig file looking for MAJOR_VERSION and
 MINOR_VERSION, emitting them into a webkit_version.h header file as
 WEBKIT_MAJOR_VERSION and WEBKIT_MINOR_VERSION macros.
 '''
 
 import os
@@ skipping 30 matching lines @@
         major = int(match.group(1))
         continue
     if minor == -1:
       match = re_minor.match(line)
       if match:
         minor = int(match.group(1))
         continue
   assert(major >= 0 and minor >= 0)
   return (major, minor)
 
+
 def GetWebKitRevision(webkit_dir, version_file):
   """Get the WebKit revision, in the form 'trunk@1234'."""
 
   # "svn info" tells us what we want, but third_party/WebKit does *not*
   # point at the upstream repo.  So instead we run svn info on the directory
   # containing the versioning file (which is some subdirectory of WebKit).
   version_file_dir = os.path.dirname(version_file)
   version_info = lastchange.FetchVersionInfo(
       default_lastchange=None,
       directory=os.path.join(webkit_dir, version_file_dir),
@@ skipping 26 matching lines @@
   f = open(fname, 'wb')
   template = """// webkit_version.h
 // generated from %s
 
 #define WEBKIT_VERSION_MAJOR %d
 #define WEBKIT_VERSION_MINOR %d
 #define WEBKIT_SVN_REVISION "%s"
 """ % (version_file, major, minor, webkit_revision)
   f.write(template)
   f.close()
+  return 0
+
 
 def main():
-  EmitVersionHeader(*sys.argv[1:])
+  return EmitVersionHeader(*sys.argv[1:])
 
 
 if __name__ == "__main__":
-  main()
+  sys.exit(main())