PlzNavigate: Fix ServiceWorkerHandler not finding WebContents.

content/browser/service_worker/service_worker_context_core.cc

Index: content/browser/service_worker/service_worker_context_core.cc
diff --git a/content/browser/service_worker/service_worker_context_core.cc b/content/browser/service_worker/service_worker_context_core.cc
index 407b6dcb25bb0ca5fb8459d6bd83476fa3e6eb7d..72e7e6d7ffc1f59a6ff610f21bbc205b83243867 100644
--- a/content/browser/service_worker/service_worker_context_core.cc
+++ b/content/browser/service_worker/service_worker_context_core.cc
@@ -846,11 +846,11 @@ void ServiceWorkerContextCore::OnControlleeAdded(
     ServiceWorkerProviderHost* provider_host) {
   if (!observer_list_)
     return;
-  observer_list_->Notify(FROM_HERE,
-                         &ServiceWorkerContextObserver::OnControlleeAdded,
-                         version->version_id(), provider_host->client_uuid(),
-                         provider_host->process_id(), provider_host->route_id(),
-                         provider_host->provider_type());
+  observer_list_->Notify(
+      FROM_HERE, &ServiceWorkerContextObserver::OnControlleeAdded,
+      version->version_id(), provider_host->client_uuid(),
+      provider_host->process_id(), provider_host->route_id(),
+      provider_host->web_contents_getter(), provider_host->provider_type());
 }
 
 void ServiceWorkerContextCore::OnControlleeRemoved(