Eliminate OnConnect usage

components/filesystem/file_system_app.cc

Index: components/filesystem/file_system_app.cc
diff --git a/components/filesystem/file_system_app.cc b/components/filesystem/file_system_app.cc
index dd1d24b01085ecbd19c5ce4853c64b4fbb44ff65..e12cba12108749983ee9e4a59486068ab41ee570 100644
--- a/components/filesystem/file_system_app.cc
+++ b/components/filesystem/file_system_app.cc
@@ -39,7 +39,9 @@ const char kUserDataDir[] = "user-data-dir";
 
 }  // namespace filesystem
 
-FileSystemApp::FileSystemApp() : lock_table_(new LockTable) {}
+FileSystemApp::FileSystemApp() : lock_table_(new LockTable) {
+  registry_.AddInterface<mojom::FileSystem>(this);
+}
 
 FileSystemApp::~FileSystemApp() {}
 
@@ -47,10 +49,12 @@ void FileSystemApp::OnStart() {
   tracing_.Initialize(context()->connector(), context()->identity().name());
 }
 
-bool FileSystemApp::OnConnect(const service_manager::ServiceInfo& remote_info,
-                              service_manager::InterfaceRegistry* registry) {
-  registry->AddInterface<mojom::FileSystem>(this);
-  return true;
+void FileSystemApp::OnBindInterface(
+    const service_manager::ServiceInfo& source_info,
+    const std::string& interface_name,
+    mojo::ScopedMessagePipeHandle interface_pipe) {
+  registry_.BindInterface(source_info.identity, interface_name,
+                          std::move(interface_pipe));
 }
 
 // |InterfaceFactory<Files>| implementation: