Add an even simpler standalone example.

examples/hello_mojo/hello_mojo_client.cc

+// Copyright 2016 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 <stdio.h>
+
+#include <memory>
+#include <string>
+
+#include "examples/hello_mojo/hello_mojo.mojom.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/system/macros.h"
+#include "mojo/public/cpp/utility/run_loop.h"
+
+using examples::HelloMojoPtr;
+
+namespace {
+
+class HelloMojoClientApp : public mojo::ApplicationDelegate {
+ public:
+  HelloMojoClientApp() {}
+  ~HelloMojoClientApp() override {}
+
+  void Initialize(mojo::ApplicationImpl* application) override {
+    application->ConnectToService("mojo:hello_mojo_server", &hello_mojo_);
+
+    DoIt("hello");
+    DoIt("goodbye");
+  }
+
+ private:
+  void DoIt(const std::string& request) {
+    hello_mojo_->Say(request, [request](const mojo::String& response) {
+      printf("%s --> %s\n", request.c_str(), response.get().c_str());
+    });
+  }
+
+  HelloMojoPtr hello_mojo_;
+
+  MOJO_DISALLOW_COPY_AND_ASSIGN(HelloMojoClientApp);
+};
+
+}  // namespace
+
+MojoResult MojoMain(MojoHandle application_request) {
+  return mojo::ApplicationRunner(std::unique_ptr<mojo::ApplicationDelegate>(
+                                     new HelloMojoClientApp()))

[kulakowski, 2016/02/16 18:35:54]

clang format makes
                  me
    happy sometimes

+      .Run(application_request);
+}