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

mojo/examples/media_viewer/media_viewer.cc

Index: mojo/examples/media_viewer/media_viewer.cc
diff --git a/mojo/examples/media_viewer/media_viewer.cc b/mojo/examples/media_viewer/media_viewer.cc
index 531e14416e5b6d7b7db03c79285b6f795d9ffd7c..3c1eb133b73f6f93cdaa9a0eb104c87df189592b 100644
--- a/mojo/examples/media_viewer/media_viewer.cc
+++ b/mojo/examples/media_viewer/media_viewer.cc
@@ -11,7 +11,9 @@
 #include "mojo/examples/media_viewer/media_viewer.mojom.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/public/cpp/application/interface_factory_impl.h"
 #include "mojo/public/cpp/bindings/interface_impl.h"
 #include "mojo/services/public/cpp/view_manager/view.h"
@@ -384,10 +386,10 @@ void NavigatorImpl::Navigate(
 }
 
 }  // namespace examples
+}  // namespace mojo
 
-// static
-ApplicationDelegate* ApplicationDelegate::Create() {
-  return new examples::MediaViewer;
+extern "C" APPLICATION_EXPORT MojoResult CDECL MojoMain(
+    MojoHandle shell_handle) {
+  mojo::ApplicationRunnerChromium runner(new mojo::examples::MediaViewer);
+  return runner.Run(shell_handle);
 }
-
-}  // namespace mojo