[chrome-devtools-frontend] Updates after Blink+Chromium merge

gae/main.py

 # 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 re
 # F0401:  7,0: Unable to import 'webapp2'
 # pylint: disable=F0401
 import webapp2
 
 import cache
@@ skipping 60 matching lines @@
           meta_file_name = helper.get_revision_path(tag)
         elif tag_type =='ver':
           meta_file_name = helper.get_version_path(tag)
         else:
           self.abort(404)
 
         meta_content = file_reader.read(helper, meta_file_name)
         if meta_content:
           zip_file_name = meta_content.strip(' \t\n')
         else:
-          # Check for a known issue when devs have local commits in Blink repo,
-          # which makes lastchange.py to put a Git commit hash into
-          # LASTCHANGE.blink file.
-          if tag_type == 'rev' and re.match(r'^@[0-9a-f]{40}$', tag):
-            self.error(404)
-            self.response.write(
-              '<h1>404 Not Found</h1>'
-              'Are you building Chromium yourself? '
-              'If yes, please make sure you have synced past commit '
-              '<b>#335156</b>, run the following command, and then rebuild:'
-              '<div style="font-family:monospace;margin:1em;">'
-              'python build/util/lastchange.py -s third_party/WebKit '
-              '--git-svn-go-deeper > build/util/LASTCHANGE.blink</div>')
-            return
           self.abort(404)
 
         content = zip_proxy.read(helper, zip_file_name, path)
         if not content:
           self.abort(404)
         content = content_processor.process(path, content)
         cache.set_content(cache_key_name, content)
 
     self.response.headers['Content-Type'] = content_type.from_path(path)
     self.response.headers['Access-Control-Allow-Origin'] = '*'
     cache_control = 'public, max-age=%d' % helper.get_max_age()
     self.response.headers['Cache-Control'] = cache_control
     self.response.body = content
 
 class LegacyStatic(Server):
   def get(self, version, path):
     # Map x.x.x.x -> x.x.x.0 to deal with patched releases
     match = re.search('(\d+\.\d+\.\d+\.)\d+', version)
     if match:
       return super(LegacyStatic, self).get('ver', match.group(1) + '0', path)
     else:
       self.abort(404)
 
 app = webapp2.WSGIApplication(
   [('/', MainPage),
    ('/precache_url', pre_cacher.PreCacherFromUrl),
    webapp2.Route('/serve_<tag_type>/<tag>/<path:.*>', Server),
    webapp2.Route('/static/<version>/<path:.*>', LegacyStatic)],
   debug=config.IS_DEV_APP_SERVER)