Add a mojo::RunApplication() for running implementations of ApplicationImplBase.

examples/trace_me/trace_me_app.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 "base/bind.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/threading/thread.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "mojo/application/application_runner_chromium.h"
 #include "mojo/common/tracing_impl.h"
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
-#include "mojo/public/cpp/application/application_runner.h"
 #include "mojo/public/cpp/application/service_provider_impl.h"
 
 // This is an example app that uses implementation of tracing from mojo/common
 // to participate in the tracing ecosystem.
 //
 // To collect a startup trace, run:
 //   `mojo_run mojo:trace_me --trace-startup [--android]
 //
 // You can also use `mojo_debug` to start and stop tracing interactively.
 
@@ skipping 46 matching lines @@
   mojo::TracingImpl tracing_;
   DISALLOW_COPY_AND_ASSIGN(TraceMeApp);
 };
 
 }  // namespace examples
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::ApplicationRunnerChromium runner(new examples::TraceMeApp);
   return runner.Run(application_request);
 }