[NaCl SDK] Don't set minimum_chrome_version for most examples.

native_client_sdk/src/build_tools/parse_dsc.py

 #!/usr/bin/env python
 # Copyright (c) 2013 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.
 
 import collections
 import fnmatch
 import optparse
 import os
 import sys
@@ skipping 49 matching lines @@
                    'examples/demo', 'examples/tutorial',
                    'src', 'tests'], True),
     'NAME': (str, '', False),
     'DATA': (list, '', False),
     'TITLE': (str, '', False),
     'GROUP': (str, '', False),
     'EXPERIMENTAL': (bool, [True, False], False),
     'PERMISSIONS': (list, '', False),
     'SOCKET_PERMISSIONS': (list, '', False),
     'MULTI_PLATFORM': (bool, [True, False], False),
+    'MIN_CHROME_VERSION': (str, '', False),
 }
 
 
 class ValidationError(Exception):
   pass
 
 
 def ValidateFormat(src, dsc_format):
   # Verify all required keys are there
   for key in dsc_format:
@@ skipping 191 matching lines @@
   except ValidationError as e:
     sys.stderr.write(str(e) + '\n')
     return 1
 
   PrintProjectTree(tree)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))