GLSurfaceView: remove old implementation, import the one from AOSP

Now that we have a reasonably well working SurfaceView implementation,
it is actually cleaner to just implement GLSurfaceView the way AOSP
does. In fact, their code doesn't have any weird dependencies, and
can mostly be used as-is.

The AOSP code is pure Java, which means we had to implement some
EGL wrappers.

This change fixes issues with Wayland (it only ever worked because
the pbuffers were allocated using an XWayland EGLDisplay), and
with resizing (which we simply didn't support), all while getting
rid of quite some (arguably not very readable) LoC.

src/api-impl/android/media/MediaPlayer.java

@@ -33,6 +33,7 @@ public class MediaPlayer {
 	public void setOnSeekCompleteListener(MediaPlayer.OnSeekCompleteListener dummy) {}
 	public void setOnVideoSizeChangedListener(MediaPlayer.OnVideoSizeChangedListener dummy) {}
 	public void setAudioStreamType(int dummy) {}
+	public void pause() {}
 	public void prepareAsync() {}
 	public void reset() {}
 	public void release() {}