service_manager: More consistent Service lifecycle API

services/service_manager/public/cpp/lib/service.cc

Index: services/service_manager/public/cpp/lib/service.cc
diff --git a/services/service_manager/public/cpp/lib/service.cc b/services/service_manager/public/cpp/lib/service.cc
index 72222efac5352fd48fb510ba9ee9a67fd2418cfe..4348425aa551f7bec9469259de683e2248a27c77 100644
--- a/services/service_manager/public/cpp/lib/service.cc
+++ b/services/service_manager/public/cpp/lib/service.cc
@@ -44,6 +44,8 @@ void Service::OnBindInterface(const ServiceInfo& source_info,
 
 bool Service::OnStop() { return true; }
 
+void Service::OnStartFailed() {}
+
 ServiceContext* Service::context() const {
   DCHECK(service_context_)
       << "Service::context() may only be called during or after OnStart().";
@@ -64,6 +66,18 @@ bool ForwardingService::OnConnect(const ServiceInfo& remote_info,
   return target_->OnConnect(remote_info, registry);
 }
 
+void ForwardingService::OnBindInterface(
+    const ServiceInfo& remote_info,
+    const std::string& interface_name,
+    mojo::ScopedMessagePipeHandle interface_pipe) {
+  target_->OnBindInterface(remote_info, interface_name,
+                           std::move(interface_pipe));
+}
+
 bool ForwardingService::OnStop() { return target_->OnStop(); }
 
+void ForwardingService::OnStartFailed() {
+  return target_->OnStartFailed();
+}
+
 }  // namespace service_manager