Introduce ServiceWorkerHandle for tracking WebServiceWorkerImpl reference

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 218fd94064de4ba2a364375a3a6cbc2f8270392a..79ef120f5a11cee9e68f9b3418f6c4b5ab24f5f7 100644
--- a/content/browser/service_worker/service_worker_provider_host.cc
+++ b/content/browser/service_worker/service_worker_provider_host.cc
@@ -6,6 +6,8 @@
 
 #include "base/stl_util.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
+#include "content/browser/service_worker/service_worker_dispatcher_host.h"
+#include "content/browser/service_worker/service_worker_handle.h"
 #include "content/browser/service_worker/service_worker_utils.h"
 #include "content/browser/service_worker/service_worker_version.h"
 
@@ -13,10 +15,12 @@ namespace content {
 
 ServiceWorkerProviderHost::ServiceWorkerProviderHost(
     int process_id, int provider_id,
-    base::WeakPtr<ServiceWorkerContextCore> context)
+    base::WeakPtr<ServiceWorkerContextCore> context,
+    ServiceWorkerDispatcherHost* dispatcher_host)
     : process_id_(process_id),
       provider_id_(provider_id),
-      context_(context) {
+      context_(context),
+      dispatcher_host_(dispatcher_host) {
 }
 
 ServiceWorkerProviderHost::~ServiceWorkerProviderHost() {
@@ -42,13 +46,21 @@ void ServiceWorkerProviderHost::SetActiveVersion(
     version->AddControllee(this);
   if (previous_version)
     previous_version->RemoveControllee(this);
+
+  dispatcher_host_->RegisterServiceWorkerHandle(
+      ServiceWorkerHandle::Create(context_, dispatcher_host_, version));
   // TODO(kinuko): dispatch activechange event to the script clients.
+  // dispatcher_host_->Send(ServiceWorkerMsg_ActiveChangeEvent(...));
 }
 
 void ServiceWorkerProviderHost::SetPendingVersion(
     ServiceWorkerVersion* version) {
   pending_version_ = version;
+
+  dispatcher_host_->RegisterServiceWorkerHandle(
+      ServiceWorkerHandle::Create(context_, dispatcher_host_, version));
   // TODO(kinuko): dispatch pendingchange event to the script clients.
+  // dispatcher_host_->Send(ServiceWorkerMsg_PendingChangeEvent(...));
 }
 
 bool ServiceWorkerProviderHost::SetHostedVersionId(int64 version_id) {