Transfer serviceworker state during cross site navigations too.

content/browser/service_worker/service_worker_provider_host.cc

Index: content/browser/service_worker/service_worker_provider_host.cc
diff --git a/content/browser/service_worker/service_worker_provider_host.cc b/content/browser/service_worker/service_worker_provider_host.cc
index e16454558e0ec9cc46862b3110a811dcf3bfca6f..2b1198050b309f7a5d32401b013e483d43301490 100644
--- a/content/browser/service_worker/service_worker_provider_host.cc
+++ b/content/browser/service_worker/service_worker_provider_host.cc
@@ -214,6 +214,23 @@ void ServiceWorkerProviderHost::AddScopedProcessReferenceToPattern(
   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;