Factor stuff from ApplicationImpl out to a new class, ApplicationImplBase.

services/nacl/nonsfi/content_handler_main_nexe.cc

 // Copyright 2015 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 <fcntl.h>
 
 #include "base/files/file_util.h"
 #include "mojo/application/application_runner_chromium.h"
 #include "mojo/application/content_handler_factory.h"
 #include "mojo/data_pipe_utils/data_pipe_utils.h"
 #include "mojo/message_pump/message_pump_mojo.h"
 #include "mojo/nacl/nonsfi/nexe_launcher_nonsfi.h"
 #include "mojo/public/c/system/main.h"
+#include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
 
 namespace nacl {
 namespace content_handler {
 
 class NaClContentHandler : public mojo::ApplicationDelegate,
                            public mojo::ContentHandlerFactory::Delegate {
  public:
   NaClContentHandler() : content_handler_factory_(this) {}
 
@@ skipping 38 matching lines @@
 };
 
 }  // namespace content_handler
 }  // namespace nacl
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::ApplicationRunnerChromium runner(
       new nacl::content_handler::NaClContentHandler());
   return runner.Run(application_request);
 }