Added an application framework for demos. Ported hello-triangle example in Op...

gpu/demos/app_framework/platform.h

+// Copyright (c) 2006-2009 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.
+
+// Platform-specific types and definitions for native widget handles.
+
+#ifndef GPU_DEMOS_APP_FRAMEWORK_PLATFORM_H_
+#define GPU_DEMOS_APP_FRAMEWORK_PLATFORM_H_
+
+#ifdef _WINDOWS
+#include <windows.h>
+#endif  // _WINDOWS
+
+#include "build/build_config.h"
+
+namespace gpu_demos {
+
+#if defined(OS_WIN)
+typedef HWND NativeWindowHandle;
+#endif  // defined(OS_WIN)
+
+}  // namespace gpu_demos
+#endif  // GPU_DEMOS_APP_FRAMEWORK_PLATFORM_H_