Transfer serviceworker state during cross site navigations too.

content/browser/loader/cross_site_resource_handler.cc

Index: content/browser/loader/cross_site_resource_handler.cc
diff --git a/content/browser/loader/cross_site_resource_handler.cc b/content/browser/loader/cross_site_resource_handler.cc
index 2ec5ee569346113672a1efb5e98b3df41b69188c..75619919d2e10aec61e972082aab567800835986 100644
--- a/content/browser/loader/cross_site_resource_handler.cc
+++ b/content/browser/loader/cross_site_resource_handler.cc
@@ -15,6 +15,7 @@
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/loader/resource_request_info_impl.h"
+#include "content/browser/service_worker/service_worker_request_handler.h"
 #include "content/browser/site_instance_impl.h"
 #include "content/browser/transition_request_manager.h"
 #include "content/public/browser/browser_thread.h"
@@ -370,6 +371,12 @@ void CrossSiteResourceHandler::StartCrossSiteTransition(
 
   AppCacheInterceptor::PrepareForCrossSiteTransfer(
       request(), global_id.child_id);
+
+  ServiceWorkerRequestHandler* handler =
+      ServiceWorkerRequestHandler::GetHandler(request());
+  if (handler)
+    handler->PrepareForCrossSiteTransfer(global_id.child_id);
+
   ResourceDispatcherHostImpl::Get()->MarkAsTransferredNavigation(global_id);
 
   BrowserThread::PostTask(