Move all calls on ServiceWorkerContextCoreObserver to ServiceWorkerContextCore.

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 c2b000cffaaa608d794cc89521549d2fb4d8075e..bfd2e2c56fc5b001d2f80984c5f05f56853d8ba7 100644
--- a/content/browser/service_worker/service_worker_context_core.cc
+++ b/content/browser/service_worker/service_worker_context_core.cc
@@ -766,6 +766,13 @@ int ServiceWorkerContextCore::GetVersionFailureCount(int64_t version_id) {
   return it->second.count;
 }
 
+void ServiceWorkerContextCore::OnStorageWiped() {
+  if (!observer_list_)
+    return;
+  observer_list_->Notify(FROM_HERE,
+                         &ServiceWorkerContextCoreObserver::OnStorageWiped);
+}
+
 void ServiceWorkerContextCore::OnRunningStateChanged(
     ServiceWorkerVersion* version) {
   if (!observer_list_)