Almost done: ApplicationDelegate -> ApplicationImplBase conversion.

services/js/test/js_application_test_base.h

 // Copyright 2014 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_JS_TEST_JS_APPLICATION_TEST_BASE_H_
 #define SERVICES_JS_TEST_JS_APPLICATION_TEST_BASE_H_
 
 #include "base/files/file_path.h"
 #include "base/path_service.h"
-#include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/public/cpp/application/application_test_base.h"
 
 namespace js {
 namespace test {
 
 class JSApplicationTestBase : public mojo::test::ApplicationTestBase {
  public:
   JSApplicationTestBase();
   ~JSApplicationTestBase() override;
 
  protected:
   const base::FilePath JSAppPath(const std::string& filename);
   const std::string JSAppURL(const std::string& filename);
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(JSApplicationTestBase);
 };
 
 }  // namespace test
 }  // namespace js
 
 #endif  // SERVICES_JS_TEST_JS_APPLICATION_TEST_BASE_H_