Force a python_only rjsmin version in devtools build

third_party/WebKit/Source/devtools/scripts/build/rjsmin.py

 #!/usr/bin/env python
 # -*- coding: ascii -*-
 r"""
 =====================
  Javascript Minifier
 =====================
 
 rJSmin is a javascript minifier written in python.
 
 The minifier is based on the semantics of `jsmin.c by Douglas Crockford`_\\.
@@ skipping 325 matching lines @@
             return space_sub_banged(
                 space_subber_banged, '\n%s\n' % script
             ).strip()
         else:
             return space_sub_simple(
                 space_subber_simple, '\n%s\n' % script
             ).strip()
 
     return jsmin
 
-jsmin = _make_jsmin()
+jsmin = _make_jsmin(python_only=True)  # pylint: disable = invalid-name
 
 
 def jsmin_for_posers(script, keep_bang_comments=False):
     r"""
     Minify javascript based on `jsmin.c by Douglas Crockford`_\.
 
     Instead of parsing the stream char by char, it uses a regular
     expression approach which minifies the whole script with one big
     substitution regex.
 
@@ skipping 149 matching lines @@
         if '-p' in argv or '-bp' in argv or '-pb' in argv:
             xjsmin = _make_jsmin(python_only=True)
         else:
             xjsmin = jsmin
 
         _sys.stdout.write(xjsmin(
             _sys.stdin.read(), keep_bang_comments=keep_bang_comments
         ))
 
     main()