Replace ApplicationImpl::CreateApplicationConnector() with a standalone helper function.

mojo/public/cpp/application/lib/connect.cc

Index: mojo/public/cpp/application/lib/connect.cc
diff --git a/mojo/public/cpp/application/lib/connect.cc b/mojo/public/cpp/application/lib/connect.cc
new file mode 100644
index 0000000000000000000000000000000000000000..33130da85a8b3799e9f62cd7544de3d5a4cb45a7
--- /dev/null
+++ b/mojo/public/cpp/application/lib/connect.cc
@@ -0,0 +1,17 @@
+// Copyright 2016 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/public/cpp/application/connect.h"
+
+#include "mojo/public/interfaces/application/shell.mojom.h"
+
+namespace mojo {
+
+InterfaceHandle<ApplicationConnector> CreateApplicationConnector(Shell* shell) {
+  InterfaceHandle<ApplicationConnector> application_connector;
+  shell->CreateApplicationConnector(GetProxy(&application_connector));
+  return application_connector;
+}
+
+}  // namespace mojo