Move tracing/third_party/tvcm -> third_party/py_vulcanize.

third_party/py_vulcanize/py_vulcanize/html_generation_controller.py

 # Copyright 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 os
 import re
-from tvcm import style_sheet
+from py_vulcanize import style_sheet
 
 
 class HTMLGenerationController(object):
 
   def __init__(self):
     self.current_module = None
 
   def GetHTMLForStylesheetHRef(self, href):  # pylint: disable=unused-argument
     return None
 
   def GetHTMLForInlineStylesheet(self, contents):
     if self.current_module is None:
       if re.search('url\(.+\)', contents):
         raise Exception(
             'Default HTMLGenerationController cannot handle inline style urls')
       return contents
 
     module_dirname = os.path.dirname(self.current_module.resource.absolute_path)
     ss = style_sheet.ParsedStyleSheet(
         self.current_module.loader, module_dirname, contents)
     return ss.contents_with_inlined_images