Docserver: refactor the Handler/ServerInstance relationship into a servlet

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

Index: chrome/common/extensions/docs/server2/preview.py
diff --git a/chrome/common/extensions/docs/server2/preview.py b/chrome/common/extensions/docs/server2/preview.py
index 3ede958726e7aa8d4425e1bcd4f460f7f09c27ab..fe2dc299b61568be73dbaa67d2b9caf1bc94bf87 100755
--- a/chrome/common/extensions/docs/server2/preview.py
+++ b/chrome/common/extensions/docs/server2/preview.py
@@ -33,6 +33,7 @@ import build_server
 # server quits.
 build_server.main()
 
+from render_servlet import AlwaysOnline
 from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
 from local_renderer import LocalRenderer
 import logging
@@ -46,13 +47,14 @@ def _GetLocalPath():
     return os.path.join(sys.argv[0].rsplit(os.sep, 1)[0], os.pardir, os.pardir)
   return os.path.join(os.pardir, os.pardir)
 
+@AlwaysOnline
 def _Render(base_dir, path):
   renderer = LocalRenderer(base_dir)
-  content, status, headers = renderer.Render(path, always_online=True)
+  content, status, headers = renderer.Render(path)
   while status in [301, 302]:
     redirect = headers['Location'].lstrip('/')
     sys.stderr.write('<!-- Redirected %s to %s -->\n' % (path, redirect))
-    content, status, headers = renderer.Render(redirect, always_online=True)
+    content, status, headers = renderer.Render(redirect)
   return (content, status, headers)
 
 class RequestHandler(BaseHTTPRequestHandler):