AppRTCDemo: Render each video in a separate SurfaceView

talk/app/webrtc/androidtests/src/org/webrtc/VideoCapturerAndroidTest.java

 /*
  * libjingle
  * Copyright 2015 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 30 matching lines @@
   static class RendererCallbacks implements VideoRenderer.Callbacks {
     private int framesRendered = 0;
     private Object frameLock = 0;
 
     @Override
     public void renderFrame(I420Frame frame) {
       synchronized (frameLock) {
         ++framesRendered;
         frameLock.notify();
       }
+      VideoRenderer.renderFrameDone(frame);
     }
 
     // TODO(guoweis): Remove this once chrome code base is updated.
     @Override
     public boolean canApplyRotation() {
       return false;
     }
 
     public int WaitForNextFrameToRender() throws InterruptedException {
       synchronized (frameLock) {
@@ skipping 245 matching lines @@
     observer.WaitForNextCapturedFrame();
     capturer.stopCapture();
 
     listOftimestamps = observer.getCopyAndResetListOftimeStamps();
     assertTrue(listOftimestamps.size() >= 2);
     for (Long timeStamp : listOftimestamps) {
       capturer.returnBuffer(timeStamp);
     }
   }
 }