Switch base::IDMap to use unique_ptr.

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 81e8a6ddd609b1a9a63039292f43e931d3cf9bb9..e8ad65462fd5a55fec7e2f098efd3c7cbf4e7aca 100644
--- a/content/browser/service_worker/service_worker_dispatcher_host.cc
+++ b/content/browser/service_worker/service_worker_dispatcher_host.cc
@@ -232,13 +232,13 @@ bool ServiceWorkerDispatcherHost::Send(IPC::Message* message) {
 void ServiceWorkerDispatcherHost::RegisterServiceWorkerHandle(
     std::unique_ptr<ServiceWorkerHandle> handle) {
   int handle_id = handle->handle_id();
-  handles_.AddWithID(handle.release(), handle_id);
+  handles_.AddWithID(std::move(handle), handle_id);
 }
 
 void ServiceWorkerDispatcherHost::RegisterServiceWorkerRegistrationHandle(
     std::unique_ptr<ServiceWorkerRegistrationHandle> handle) {
   int handle_id = handle->handle_id();
-  registration_handles_.AddWithID(handle.release(), handle_id);
+  registration_handles_.AddWithID(std::move(handle), handle_id);
 }
 
 ServiceWorkerHandle* ServiceWorkerDispatcherHost::FindServiceWorkerHandle(