Add IPC stubs between browser and ServiceWorker's worker context in the child process

content/browser/service_worker/service_worker_dispatcher_host.cc

Index: content/browser/service_worker/service_worker_dispatcher_host.cc
diff --git a/content/browser/service_worker/service_worker_dispatcher_host.cc b/content/browser/service_worker/service_worker_dispatcher_host.cc
index 76e7ff746ae8baaf19628b9069fff2bfb9b58329..7836ae99fea9c31c8be305e2cb7004330674db3b 100644
--- a/content/browser/service_worker/service_worker_dispatcher_host.cc
+++ b/content/browser/service_worker/service_worker_dispatcher_host.cc
@@ -61,9 +61,6 @@ void ServiceWorkerDispatcherHost::OnDestruct() const {
 bool ServiceWorkerDispatcherHost::OnMessageReceived(
     const IPC::Message& message,
     bool* message_was_ok) {
-  if (IPC_MESSAGE_CLASS(message) != ServiceWorkerMsgStart)
-    return false;
-
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(
     ServiceWorkerDispatcherHost, message, *message_was_ok)
@@ -75,6 +72,10 @@ bool ServiceWorkerDispatcherHost::OnMessageReceived(
                         OnProviderCreated)
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_ProviderDestroyed,
                         OnProviderDestroyed)
+    IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_WorkerStarted,
+                        OnWorkerStarted)
+    IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_WorkerStopped,
+                        OnWorkerStopped)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -176,6 +177,21 @@ void ServiceWorkerDispatcherHost::RegistrationComplete(
       thread_id, request_id, registration_id));
 }
 
+void ServiceWorkerDispatcherHost::OnWorkerStarted(
+    int thread_id, int embedded_worker_id) {
+  if (!context_)
+    return;
+  context_->embedded_worker_registry()->OnWorkerStarted(
+      render_process_id_, thread_id, embedded_worker_id);
+}
+
+void ServiceWorkerDispatcherHost::OnWorkerStopped(int embedded_worker_id) {
+  if (!context_)
+    return;
+  context_->embedded_worker_registry()->OnWorkerStopped(
+      render_process_id_, embedded_worker_id);
+}
+
 void ServiceWorkerDispatcherHost::UnregistrationComplete(
     int32 thread_id,
     int32 request_id,