Transfer serviceworker state during cross site navigations too.

content/browser/service_worker/service_worker_provider_host.cc

 // 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.
 
 #include "content/browser/service_worker/service_worker_provider_host.h"
 
 #include "base/stl_util.h"
 #include "content/browser/message_port_message_filter.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_context_request_handler.h"
@@ skipping 196 matching lines @@
           sent_message_port_ids,
           new_routing_ids));
 }
 
 void ServiceWorkerProviderHost::AddScopedProcessReferenceToPattern(
     const GURL& pattern) {
   associated_patterns_.push_back(pattern);
   IncreaseProcessReference(pattern);
 }
 
+void ServiceWorkerProviderHost::PrepareForCrossSiteTransfer() {
+  DCHECK(!associated_registration());
+  process_id_ = 0;

[falken, 2014/11/11 08:38:57]

EmbeddedWorkerInstance uses -1 for "invalid process id", maybe it's time to add
a kInvalidProcessId constant?

[michaeln, 2014/11/13 00:05:08]

Done

+  provider_id_ = kInvalidServiceWorkerProviderId;
+  dispatcher_host_ = nullptr;
+}
+
+void ServiceWorkerProviderHost::CompleteCrossSiteTransfer(
+    int new_process_id,
+    int new_provider_id,
+    ServiceWorkerDispatcherHost* new_dispatcher_host) {
+  DCHECK(!dispatcher_host_);
+  process_id_ = new_process_id;
+  provider_id_ = new_provider_id;
+  dispatcher_host_ = new_dispatcher_host;
+}
+
 ServiceWorkerObjectInfo ServiceWorkerProviderHost::CreateHandleAndPass(
     ServiceWorkerVersion* version) {
   ServiceWorkerObjectInfo info;
   if (context_ && version) {
     scoped_ptr<ServiceWorkerHandle> handle =
         ServiceWorkerHandle::Create(context_,
                                     dispatcher_host_,
                                     kDocumentMainThreadId,
                                     provider_id_,
                                     version);
@@ skipping 17 matching lines @@
     context_->process_manager()->RemoveProcessReferenceFromPattern(
         pattern, process_id_);
   }
 }
 
 bool ServiceWorkerProviderHost::IsContextAlive() {
   return context_ != NULL;
 }
 
 }  // namespace content