Eliminate OnConnect usage

components/leveldb/leveldb_app.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/leveldb/leveldb_app.h"
 
 #include "components/leveldb/leveldb_service_impl.h"
-#include "services/service_manager/public/cpp/interface_registry.h"
 #include "services/service_manager/public/cpp/service_context.h"
 
 namespace leveldb {
 
-LevelDBApp::LevelDBApp() : file_thread_("LevelDBFile") {}
+LevelDBApp::LevelDBApp() : file_thread_("LevelDBFile") {
+  registry_.AddInterface<mojom::LevelDBService>(this);
+}
 
 LevelDBApp::~LevelDBApp() {}
 
 void LevelDBApp::OnStart() {
   tracing_.Initialize(context()->connector(), context()->identity().name());
 }
 
-bool LevelDBApp::OnConnect(const service_manager::ServiceInfo& remote_info,
-                           service_manager::InterfaceRegistry* registry) {
-  registry->AddInterface<mojom::LevelDBService>(this);
-  return true;
+void LevelDBApp::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));
 }
 
 void LevelDBApp::Create(const service_manager::Identity& remote_identity,
                         leveldb::mojom::LevelDBServiceRequest request) {
   if (!service_) {
     if (!file_thread_.IsRunning())
       file_thread_.Start();
     service_.reset(
         new LevelDBServiceImpl(file_thread_.message_loop()->task_runner()));
   }
   bindings_.AddBinding(service_.get(), std::move(request));
 }
 
 }  // namespace leveldb