Get mojo_shell building inside chromium checkout.

mojo/services/view_manager/main.cc

Index: mojo/services/view_manager/main.cc
diff --git a/mojo/services/view_manager/main.cc b/mojo/services/view_manager/main.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d3ced3d353e89d4bccc76d2ae5577e90afaebd41
--- /dev/null
+++ b/mojo/services/view_manager/main.cc
@@ -0,0 +1,12 @@
+// 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/application/application_runner_chromium.h"
+#include "mojo/public/c/system/main.h"
+#include "mojo/services/view_manager/view_manager_app.h"
+
+MojoResult MojoMain(MojoHandle shell_handle) {
+  mojo::ApplicationRunnerChromium runner(new view_manager::ViewManagerApp);
+  return runner.Run(shell_handle);
+}