Clean up JSON Schema Compiler.

tools/json_schema_compiler/preview.py

 #!/usr/bin/env python
 
 # Copyright (c) 2012 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.
 """Server for viewing the compiled C++ code from tools/json_schema_compiler.
 """
 
 import cc_generator
 import code
-import compiler
 import cpp_type_generator
 import cpp_util
 import h_generator
 import idl_schema
 import json_schema
 import model
 import optparse
 import os
 import schema_loader
-import sys
 import urlparse
 from highlighters import (
     pygments_highlighter, none_highlighter, hilite_me_highlighter)
 from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
 
+
 class CompilerHandler(BaseHTTPRequestHandler):
   """A HTTPRequestHandler that outputs the result of tools/json_schema_compiler.
   """
   def do_GET(self):
     parsed_url = urlparse.urlparse(self.path)
     request_path = self._GetRequestPath(parsed_url)
 
     chromium_favicon = 'http://codereview.chromium.org/static/favicon.ico'
 
     head = code.Code()
@@ skipping 283 matching lines @@
         html.Append('<li><a href="/%s/">%s/</a>' % (full_path, filename))
       elif file_ext in ['.json', '.idl']:
         # cc/h panes will automatically update via the hash change event.
         html.Append('<li><a href="#%s">%s</a>' %
             (filename, filename))
 
     html.Append('</ul>')
 
     return html.Render()
 
+
 class PreviewHTTPServer(HTTPServer, object):
   def __init__(self, server_address, handler, highlighters):
     super(PreviewHTTPServer, self).__init__(server_address, handler)
     self.highlighters = highlighters
 
 
 if __name__ == '__main__':
   parser = optparse.OptionParser(
       description='Runs a server to preview the json_schema_compiler output.',
       usage='usage: %prog [option]...')
@@ skipping 17 matching lines @@
       highlighters['pygments'] = pygments_highlighter.PygmentsHighlighter()
     except ImportError as e:
       pass
 
     server = PreviewHTTPServer(('', int(opts.port)),
                                CompilerHandler,
                                highlighters)
     server.serve_forever()
   except KeyboardInterrupt:
     server.socket.close()