Cleaned up OpenGLUI samples and added Blasteroids.

samples/openglui/android-webgl-raytrace/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) {
+    }
+  }
+}