Cleaned up OpenGLUI samples and added Blasteroids.

samples/openglui/android/src/com/google/dartndk/DummyActivity.java

-package com.google.dartndk;
-
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.InputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-
-import android.app.NativeActivity;
-import android.content.res.AssetManager;
-import android.os.Bundle;
-import android.util.Log;
-
-public class DummyActivity extends NativeActivity {
-  @Override
-  public void onCreate(Bundle savedInstanceState) {
-    super.onCreate(savedInstanceState);
-    try {
-      File localDir = getApplicationContext().getDir("dart", 0);
-      String fileSystemPath = localDir.toString();
-      String assetPath = "dart";
-      AssetManager assetManager = getAssets();
-      String[] files = assetManager.list(assetPath);
-      byte[] buffer = new byte[1024];
-      int read;
-      for (String filename : files) {
-        String dest = fileSystemPath + "/" + filename;
-        Log.w("Dart", "Copying " + dest);
-        InputStream in = assetManager.open(assetPath + "/" + filename);
-        OutputStream out = new FileOutputStream(dest);
-        while((read = in.read(buffer)) != -1){
-          out.write(buffer, 0, read);
-        }
-        in.close();
-        out.flush();
-        ((FileOutputStream)out).getFD().sync();
-        out.close();
-      }
-    } catch (IOException ex) {
-    }
-  }
-}