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

chrome/common/extensions/docs/server2/instance_servlet.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.
 
 from appengine_wrappers import IsDevServer
 from branch_utility import BranchUtility
 from caching_file_system import CachingFileSystem
+from compiled_file_system import CompiledFileSystem
 from empty_dir_file_system import EmptyDirFileSystem
 from github_file_system import GithubFileSystem
 from third_party.json_schema_compiler.memoize import memoize
 from offline_file_system import OfflineFileSystem
 from render_servlet import RenderServlet
 from subversion_file_system import SubversionFileSystem
 from object_store_creator import ObjectStoreCreator
 from server_instance import ServerInstance
 from servlet import Servlet
 
@@ skipping 18 matching lines @@
   @memoize
   def CreateServerInstanceForChannel(self, channel):
     object_store_creator = ObjectStoreCreator(channel, start_empty=False)
     branch = (self._delegate.CreateBranchUtility(object_store_creator)
         .GetBranchForChannel(channel))
     host_file_system = CachingFileSystem(
         OfflineFileSystem(self._delegate.CreateHostFileSystemForBranch(branch)),
         object_store_creator)
     app_samples_file_system = self._delegate.CreateAppSamplesFileSystem(
         object_store_creator)
+    compiled_host_fs_factory = CompiledFileSystem.Factory(
+        host_file_system,
+        object_store_creator)
     return ServerInstance(channel,
                           object_store_creator,
                           host_file_system,
-                          app_samples_file_system)
+                          app_samples_file_system,
+                          '/static' if channel == 'stable' else
+                              '/%s/static' % channel,
+                          compiled_host_fs_factory)
 
 class InstanceServlet(object):
   '''Servlet for running on normal AppEngine instances.
   Create this via GetConstructor() so that cache state can be shared amongst
   them via the memoizing Delegate.
   '''
   class Delegate(object):
     '''Allow runtime dependencies to be overriden for testing.
     '''
     def CreateBranchUtility(self, object_store_creator):
       return BranchUtility.Create(object_store_creator)
 
     def CreateHostFileSystemForBranch(self, branch):
       return SubversionFileSystem.Create(branch)
 
     def CreateAppSamplesFileSystem(self, object_store_creator):
       # TODO(kalman): OfflineServerInstance wrapper for GithubFileSystem, but
       # the cron job doesn't crawl the samples yet.
       return (EmptyDirFileSystem() if IsDevServer() else
               GithubFileSystem.Create(object_store_creator))
 
   @staticmethod
   def GetConstructor(delegate_for_test=None):
     render_servlet_delegate = _OfflineRenderServletDelegate(
         delegate_for_test or InstanceServlet.Delegate())
     return lambda request: RenderServlet(request, render_servlet_delegate)
 
   # NOTE: if this were a real Servlet it would implement a Get() method, but
   # GetConstructor returns an appropriate lambda function (Request -> Servlet).