Wire provider_id into scriptable API provider to start listening events

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 91361a006b62765f6a4f5b15631fd9bda6056a4c..1e5c9716c717675021ce39d23d0e5ad8ea2d7a8f 100644
--- a/content/browser/service_worker/service_worker_provider_host.cc
+++ b/content/browser/service_worker/service_worker_provider_host.cc
@@ -4,6 +4,7 @@
 
 #include "content/browser/service_worker/service_worker_provider_host.h"
 
+#include "base/stl_util.h"
 #include "content/browser/service_worker/service_worker_utils.h"
 #include "content/browser/service_worker/service_worker_version.h"
 
@@ -17,6 +18,16 @@ ServiceWorkerProviderHost::ServiceWorkerProviderHost(
 ServiceWorkerProviderHost::~ServiceWorkerProviderHost() {
 }
 
+void ServiceWorkerProviderHost::AddScriptClient(int thread_id) {
+  DCHECK(!ContainsKey(client_thread_ids_, thread_id));
+  client_thread_ids_.insert(thread_id);
+}
+
+void ServiceWorkerProviderHost::RemoveScriptClient(int thread_id) {
+  DCHECK(ContainsKey(client_thread_ids_, thread_id));
+  client_thread_ids_.erase(thread_id);
+}
+
 bool ServiceWorkerProviderHost::ShouldHandleRequest(
     ResourceType::Type resource_type) const {
   if (ServiceWorkerUtils::IsMainResourceType(resource_type))