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

mojo/examples/compositor_app/compositor_app.cc

Index: mojo/examples/compositor_app/compositor_app.cc
diff --git a/mojo/examples/compositor_app/compositor_app.cc b/mojo/examples/compositor_app/compositor_app.cc
index fd66b90306a1a46963d3802ad53226dff52893d4..e44fc12f7b1a8529b2ddab095b3161d65f07464d 100644
--- a/mojo/examples/compositor_app/compositor_app.cc
+++ b/mojo/examples/compositor_app/compositor_app.cc
@@ -8,7 +8,9 @@
 #include "base/macros.h"
 #include "mojo/examples/compositor_app/compositor_host.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/gles2/gles2.h"
 #include "mojo/public/cpp/system/core.h"
 #include "mojo/services/public/cpp/geometry/geometry_type_converters.h"
@@ -60,10 +62,11 @@ class SampleApp : public ApplicationDelegate, public NativeViewportClient {
 };
 
 }  // namespace examples
+}  // namespace mojo
 
-// static
-ApplicationDelegate* ApplicationDelegate::Create() {
-  return new examples::SampleApp();
+extern "C" APPLICATION_EXPORT MojoResult CDECL MojoMain(
+    MojoHandle shell_handle) {
+  mojo::ApplicationRunnerChromium app;
+  app.take_delegate(make_scoped_delegate(new mojo::examples::SampleApp()));
+  return app.Run(shell_handle);
 }
-
-}  // namespace mojo