Refactored OpenGL embedder that works on Android, Mac or Linux.

runtime/embedders/openglui/common/isized.h

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#ifndef EMBEDDERS_OPENGLUI_COMMON_ISIZED_H_
+#define EMBEDDERS_OPENGLUI_COMMON_ISIZED_H_
+
+// An interface for objects that have a size. VMGlue needs the window
+// size when calling setup() (and eventually resize()) but it does not
+// need to know anything else about the window, so we use this interface.
+class ISized {
+  public:
+    virtual const int32_t& height() = 0;
+    virtual const int32_t& width() = 0;
+    virtual ~ISized() {}
+};
+
+#endif  // EMBEDDERS_OPENGLUI_COMMON_ISIZED_H_
+