Fix python scripts in src/ppapi/

ppapi/generators/idl_parser.py

Index: ppapi/generators/idl_parser.py
diff --git a/ppapi/generators/idl_parser.py b/ppapi/generators/idl_parser.py
old mode 100644
new mode 100755
index 43fb967c75e5fe1237581a05e26889f84f87de64..7d068b157a7a8ada7384272b437f60c0dc91a5e2
--- a/ppapi/generators/idl_parser.py
+++ b/ppapi/generators/idl_parser.py
@@ -1,5 +1,4 @@
-#!/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.
@@ -976,6 +975,7 @@ def TestErrorFiles(filter):
     InfoOut.Log("Passed parsing test.")
   return total_errs
 
+
 def TestNamespaceFiles(filter):
   idldir = os.path.split(sys.argv[0])[0]
   idldir = os.path.join(idldir, 'test_namespace', '*.idl')
@@ -1049,5 +1049,6 @@ def Main(args):
   InfoOut.Log("%d files processed." % len(filenames))
   return errs
 
+
 if __name__ == '__main__':
   sys.exit(Main(sys.argv[1:]))