Wire up SDL on Android

platform_tools/android/apps/visualbenchsdl/src/main/java/com/skia/VisualBenchTestActivity.java

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 package com.skia;
 
 import android.app.Instrumentation;
@@ skipping 42 matching lines @@
         mActivity = launchActivityWithIntent(pkg, VisualBenchActivity.class, intent);
 
         assertNotNull("mActivity is null", mActivity);
         Thread.sleep(5000);
         while (!mActivity.isDestroyed()) {
             Log.d("skiatest", "Waiting for subprocess to finish.");
             Thread.sleep(1000);
         }
     }
 }