Remove Client relationship between mojo.Shell/mojo.Application

mojo/public/cpp/application/lib/application_runner.cc

 // 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.
 
 #include "mojo/public/cpp/application/application_runner.h"
 
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/utility/run_loop.h"
 
 namespace mojo {
 
 // static
 void ApplicationImpl::Terminate() {
   RunLoop::current()->Quit();
 }
 
 ApplicationRunner::ApplicationRunner(ApplicationDelegate* delegate)
     : delegate_(delegate) {
 }
 ApplicationRunner::~ApplicationRunner() {
   assert(!delegate_);
 }
 
-MojoResult ApplicationRunner::Run(MojoHandle shell_handle) {
+MojoResult ApplicationRunner::Run(MojoHandle app_request_handle) {
   Environment env;
   {
     RunLoop loop;
-    ShellPtr shell;
-    shell.Bind(MakeScopedHandle(MessagePipeHandle(shell_handle)));
-    ApplicationImpl app(delegate_, shell.Pass());
+    ApplicationImpl app(delegate_, MakeRequest<Application>(MakeScopedHandle(
+                                       MessagePipeHandle(app_request_handle))));
     loop.Run();
   }
 
   delete delegate_;
   delegate_ = nullptr;
   return MOJO_RESULT_OK;
 }
 
 }  // namespace mojo