Refactored code to allow associating workers with multiple renderers.

chrome/renderer/render_view.cc

Index: chrome/renderer/render_view.cc
diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index e56673edfecccc39cb785af121543b77ac0460a6..a12ac300bbec734ab9f0e23a5a7dfe636e286f16 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -1916,11 +1916,12 @@ WebSharedWorker* RenderView::createSharedWorker(
   int route_id = MSG_ROUTING_NONE;
   bool url_mismatch = false;
   Send(new ViewHostMsg_LookupSharedWorker(
-      url, name, document_id, &route_id, &url_mismatch));
+      url, name, document_id, routing_id_, &route_id, &url_mismatch));
   if (url_mismatch) {
     return NULL;
   } else {
     return new WebSharedWorkerProxy(RenderThread::current(),
+                                    document_id,
                                     route_id,
                                     routing_id_);
   }