Almost done: ApplicationDelegate -> ApplicationImplBase conversion.

services/dart/content_handler_app.h

 // 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.
 
 #ifndef SERVICES_DART_CONTENT_HANDLER_APP_H_
 #define SERVICES_DART_CONTENT_HANDLER_APP_H_
 
 #include "base/bind.h"
 #include "mojo/application/content_handler_factory.h"
 #include "mojo/common/tracing_impl.h"
-#include "mojo/public/cpp/application/application_delegate.h"
+#include "mojo/public/cpp/application/application_impl_base.h"
 #include "mojo/services/url_response_disk_cache/interfaces/url_response_disk_cache.mojom.h"
 #include "services/dart/content_handler_app_service_connector.h"
 #include "services/dart/dart_tracing.h"
 
 namespace dart {
 
 class DartContentHandlerApp;
 
 class DartContentHandler : public mojo::ContentHandlerFactory::ManagedDelegate {
  public:
   DartContentHandler(DartContentHandlerApp* app, bool strict);
 
   void set_handler_task_runner(
       scoped_refptr<base::SingleThreadTaskRunner> handler_task_runner);
 
  private:
   // Overridden from ContentHandlerFactory::ManagedDelegate:
   scoped_ptr<mojo::ContentHandlerFactory::HandledApplicationHolder>
   CreateApplication(
       mojo::InterfaceRequest<mojo::Application> application_request,
       mojo::URLResponsePtr response) override;
 
   DartContentHandlerApp* app_;
   bool strict_;
   scoped_refptr<base::SingleThreadTaskRunner> handler_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(DartContentHandler);
 };
 
-class DartContentHandlerApp : public mojo::ApplicationDelegate {
+class DartContentHandlerApp : public mojo::ApplicationImplBase {
  public:
   DartContentHandlerApp();
 
   ~DartContentHandlerApp() override;
 
   void ExtractApplication(base::FilePath* application_dir,
                           mojo::URLResponsePtr response,
                           const base::Closure& callback);
 
   bool run_on_message_loop() const;
 
  private:
-  // Overridden from mojo::ApplicationDelegate:
-  void Initialize(mojo::ApplicationImpl* app) override;
-
-  // Overridden from ApplicationDelegate:
-  bool ConfigureIncomingConnection(
+  // Overridden from mojo::ApplicationImplBase:
+  void OnInitialize() override;
+  bool OnAcceptConnection(
       mojo::ServiceProviderImpl* service_provider_impl) override;
 
   mojo::TracingImpl tracing_;
   DartContentHandler content_handler_;
   DartContentHandler strict_content_handler_;
   mojo::URLResponseDiskCachePtr url_response_disk_cache_;
   ContentHandlerAppServiceConnector* service_connector_;
   DartTracingImpl dart_tracing_;
   bool default_strict_;
   bool run_on_message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(DartContentHandlerApp);
 };
-}
+
+}  // namespace dart
 
 #endif  // SERVICES_DART_CONTENT_HANDLER_APP_H_