Fix python scripts in src/ppapi/

ppapi/generators/idl_parser.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.
 
 """ Parser for PPAPI IDL """
 
 #
 # IDL Parser
 #
 # The parser is uses the PLY yacc library to build a set of parsing rules based
@@ skipping 956 matching lines @@
     if errs:
       ErrOut.Log("%s test failed with %d error(s)." % (filename, errs))
       total_errs += errs
 
   if total_errs:
     ErrOut.Log("Failed parsing test.")
   else:
     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')
   filenames = glob.glob(idldir)
   testnames = []
 
   for filename in filenames:
     if filter and filename not in filter: continue
     testnames.append(filename)
 
@@ skipping 53 matching lines @@
     return 0
 
   # Otherwise, build the AST
   ast = ParseFiles(filenames)
   errs = ast.GetProperty('ERRORS')
   if errs:
     ErrOut.Log('Found %d error(s).' % errs);
   InfoOut.Log("%d files processed." % len(filenames))
   return errs
 
+
 if __name__ == '__main__':
   sys.exit(Main(sys.argv[1:]))