mojo: first take on removing mojo_main_{chromium,standalone}.

mojo/examples/demo_launcher/demo_launcher.cc

Index: mojo/examples/demo_launcher/demo_launcher.cc
diff --git a/mojo/examples/demo_launcher/demo_launcher.cc b/mojo/examples/demo_launcher/demo_launcher.cc
index 86a1b3db92032cd2d8329241cc8d96db01f6c929..af3005d1b4c3506fa148e1df2f0240aa6fa99903 100644
--- a/mojo/examples/demo_launcher/demo_launcher.cc
+++ b/mojo/examples/demo_launcher/demo_launcher.cc
@@ -7,7 +7,9 @@
 #include "base/run_loop.h"
 #include "mojo/public/cpp/application/application_connection.h"
 #include "mojo/public/cpp/application/application_delegate.h"
+#include "mojo/public/cpp/application/application_export.h"
 #include "mojo/public/cpp/application/application_impl.h"
+#include "mojo/public/cpp/application/application_runner_chromium.h"
 #include "mojo/services/public/interfaces/view_manager/view_manager.mojom.h"
 
 namespace mojo {
@@ -39,10 +41,11 @@ class DemoLauncher : public ApplicationDelegate {
 };
 
 }  // namespace examples
+}  // namespace mojo
 
-// static
-ApplicationDelegate* ApplicationDelegate::Create() {
-  return new examples::DemoLauncher;
+extern "C" APPLICATION_EXPORT MojoResult CDECL MojoMain(
+    MojoHandle shell_handle) {
+  mojo::ApplicationRunnerChromium app;
+  app.take_delegate(make_scoped_delegate(new mojo::examples::DemoLauncher));
+  return app.Run(shell_handle);
 }
-
-}  // namespace mojo