Fixed: screen time out during streaming in mediacodec mode.

Also, print log to indicate if the device is provisioned or not.

Change-Id: I674e2fe4531cc79b4bf307939c4b08ba19207244
related-to-bug: 6821614

proprietary/samplePlayer/src/com/widevine/demo/VideoPlayerView.java

@@ -18,6 +18,7 @@ import android.widget.Button;
 import android.view.Display;
 import android.view.Gravity;
 import android.view.View;
+import android.view.WindowManager;
 import android.content.Context;
 
 import android.view.SurfaceHolder;
@@ -62,6 +63,8 @@ public class VideoPlayerView extends Activity {
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         Display display = getWindowManager().getDefaultDisplay();
+        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+
         height = display.getHeight();
         width = display.getWidth();
         context = this;