Extract shell methods from ApplicationImpl into a base class, and pass this to Initialize() instead.

mojo/shell/standalone/context.cc

 // Copyright 2013 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 "mojo/shell/standalone/context.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <utility>
@@ skipping 18 matching lines @@
 #include "components/devtools_service/public/interfaces/devtools_service.mojom.h"
 #include "components/tracing/tracing_switches.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "mojo/services/tracing/public/cpp/switches.h"
 #include "mojo/services/tracing/public/cpp/trace_provider_impl.h"
 #include "mojo/services/tracing/public/cpp/tracing_impl.h"
 #include "mojo/services/tracing/public/interfaces/tracing.mojom.h"
 #include "mojo/shell/application_loader.h"
 #include "mojo/shell/connect_to_application_params.h"
 #include "mojo/shell/package_manager/package_manager_impl.h"
-#include "mojo/shell/public/cpp/application_connection.h"
-#include "mojo/shell/public/cpp/application_delegate.h"
-#include "mojo/shell/public/cpp/application_impl.h"
 #include "mojo/shell/query_util.h"
 #include "mojo/shell/runner/host/in_process_native_runner.h"
 #include "mojo/shell/runner/host/out_of_process_native_runner.h"
 #include "mojo/shell/standalone/register_local_aliases.h"
 #include "mojo/shell/standalone/switches.h"
 #include "mojo/shell/standalone/tracer.h"
 #include "mojo/shell/switches.h"
 #include "mojo/util/filename_util.h"
 #include "third_party/mojo/src/mojo/edk/embedder/embedder.h"
 #include "url/gurl.h"
@@ skipping 289 matching lines @@
         base::MessageLoop::current()->QuitWhenIdle();
       } else {
         app_complete_callback_.Run();
       }
     }
   }
 }
 
 }  // namespace shell
 }  // namespace mojo