Add quick launcher for launching mojo apps from within mash

mash/example/main/main_application_delegate.h

Index: mash/example/main/main_application_delegate.h
diff --git a/mash/example/main/main_application_delegate.h b/mash/example/main/main_application_delegate.h
deleted file mode 100644
index 9542d1c73162d61536dab613a6f76fcf6cbfc39c..0000000000000000000000000000000000000000
--- a/mash/example/main/main_application_delegate.h
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright 2015 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.
-
-#ifndef MASH_EXAMPLE_MAIN_MAIN_APPLICATION_DELEGATE_H_
-#define MASH_EXAMPLE_MAIN_MAIN_APPLICATION_DELEGATE_H_
-
-#include "base/macros.h"
-#include "base/memory/scoped_vector.h"
-#include "mojo/application/public/cpp/application_delegate.h"
-#include "mojo/application/public/cpp/interface_factory_impl.h"
-
-namespace mojo {
-class ApplicationConnection;
-}
-
-class MainApplicationDelegate : public mojo::ApplicationDelegate {
- public:
-  MainApplicationDelegate();
-  ~MainApplicationDelegate() override;
-
- private:
-  // ApplicationDelegate:
-  void Initialize(mojo::ApplicationImpl* app) override;
-  bool ConfigureIncomingConnection(
-      mojo::ApplicationConnection* connection) override;
-
-  ScopedVector<mojo::ApplicationConnection> connections_;
-
-  DISALLOW_COPY_AND_ASSIGN(MainApplicationDelegate);
-};
-
-#endif  // MASH_EXAMPLE_MAIN_MAIN_APPLICATION_DELEGATE_H_