Docserver: Add support for viewing docs with a codereview patch applied

chrome/common/extensions/docs/server2/handler.py

Index: chrome/common/extensions/docs/server2/handler.py
===================================================================
--- chrome/common/extensions/docs/server2/handler.py	(revision 199575)
+++ chrome/common/extensions/docs/server2/handler.py	(working copy)
@@ -4,11 +4,13 @@
 
 from branch_utility import BranchUtility
 from cron_servlet import CronServlet
+from patch_servlet import PatchServlet
 from instance_servlet import InstanceServlet
 from servlet import Servlet, Request, Response
 
 _SERVLETS = {
   'cron': CronServlet,
+  'patch': PatchServlet,
 }
 _DEFAULT_SERVLET = InstanceServlet.GetConstructor()
 
@@ -16,9 +18,6 @@
   def Get(self):
     path = self._request.path
 
-    if path in ['favicon.ico', 'robots.txt']:
-      return Response.NotFound('')
-
     redirect = self._RedirectSpecialCases()
     if redirect is None:
       redirect = self._RedirectFromCodeDotGoogleDotCom()