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

mojo/examples/dbus_echo/dbus_echo_app.cc

Index: mojo/examples/dbus_echo/dbus_echo_app.cc
diff --git a/mojo/examples/dbus_echo/dbus_echo_app.cc b/mojo/examples/dbus_echo/dbus_echo_app.cc
index ea18f8b96a8a601bac57bf571a96c4070815b681..024bd0104e898c67b5c33edf94f39ae91ae6c1c9 100644
--- a/mojo/examples/dbus_echo/dbus_echo_app.cc
+++ b/mojo/examples/dbus_echo/dbus_echo_app.cc
@@ -9,9 +9,11 @@
 #include "base/logging.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/environment/environment.h"
 #include "mojo/public/cpp/system/core.h"
 #include "mojo/public/cpp/system/macros.h"
+#include "mojo/public/cpp/system/main.h"
 #include "mojo/services/dbus_echo/echo.mojom.h"
 
 namespace mojo {
@@ -42,10 +44,9 @@ class DBusEchoApp : public ApplicationDelegate {
 };
 
 }  // namespace examples
+}  // namespace mojo
 
-// static
-ApplicationDelegate* ApplicationDelegate::Create() {
-  return new examples::DBusEchoApp();
+MojoResult MojoMain(MojoHandle shell_handle) {
+  mojo::ApplicationRunner runner(new mojo::examples::DBusEchoApp);
+  return runner.Run(shell_handle);
 }
-
-}  // namespace mojo