Get mojo_shell building inside chromium checkout.

mojo/shell/test/pingable_app.cc

Index: mojo/shell/test/pingable_app.cc
diff --git a/mojo/shell/test/pingable_app.cc b/mojo/shell/test/pingable_app.cc
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+// 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 "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/interface_factory.h"
+#include "mojo/public/cpp/bindings/callback.h"
+#include "mojo/public/cpp/bindings/interface_request.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "mojo/shell/test/pingable.mojom.h"
+
+namespace mojo {
+
+class PingableImpl : public Pingable {
+ public:
+  PingableImpl(InterfaceRequest<Pingable> request,
+               const std::string& app_url,
+               const std::string& connection_url)
+      : binding_(this, request.Pass()),
+        app_url_(app_url),
+        connection_url_(connection_url) {}
+
+  ~PingableImpl() override {}
+
+ private:
+  void Ping(const String& message,
+            const Callback<void(String, String, String)>& callback) override {
+    callback.Run(app_url_, connection_url_, message);
+  }
+
+  StrongBinding<Pingable> binding_;
+  std::string app_url_;
+  std::string connection_url_;
+};
+
+class PingableApp : public mojo::ApplicationDelegate,
+                    public mojo::InterfaceFactory<Pingable> {
+ public:
+  PingableApp() {}
+  ~PingableApp() override {}
+
+ private:
+  // ApplicationDelegate:
+  void Initialize(ApplicationImpl* impl) override { app_url_ = impl->url(); }
+
+  bool ConfigureIncomingConnection(
+      mojo::ApplicationConnection* connection) override {
+    connection->AddService(this);
+    return true;
+  }
+
+  // InterfaceFactory<Pingable>:
+  void Create(mojo::ApplicationConnection* connection,
+              mojo::InterfaceRequest<Pingable> request) override {
+    new PingableImpl(request.Pass(), app_url_, connection->GetConnectionURL());
+  }
+
+  std::string app_url_;
+};
+
+}  // namespace mojo
+
+MojoResult MojoMain(MojoHandle shell_handle) {
+  mojo::ApplicationRunner runner(new mojo::PingableApp);
+  return runner.Run(shell_handle);
+}