[Cronet] Make some test infrastructure public rather than package-private.

components/cronet/android/test/javatests/src/org/chromium/net/TestUrlRequestCallback.java

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.net;
 
 import android.os.ConditionVariable;
 import android.os.StrictMode;
 
 import static junit.framework.Assert.assertEquals;
 import static junit.framework.Assert.assertFalse;
 import static junit.framework.Assert.assertNotNull;
 import static junit.framework.Assert.assertNull;
 import static junit.framework.Assert.assertTrue;
 
 import static org.chromium.net.CronetTestBase.assertContains;
 
 import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.TimeUnit;
 
 /**
  * Callback that tracks information from different callbacks and and has a
  * method to block thread until the request completes on another thread.
  * Allows to cancel, block request or throw an exception from an arbitrary step.
  */
-class TestUrlRequestCallback extends UrlRequest.Callback {
+public class TestUrlRequestCallback extends UrlRequest.Callback {
     public ArrayList<UrlResponseInfo> mRedirectResponseInfoList = new ArrayList<UrlResponseInfo>();
     public ArrayList<String> mRedirectUrlList = new ArrayList<String>();
     public UrlResponseInfo mResponseInfo;
     public CronetException mError;
 
     public ResponseStep mResponseStep = ResponseStep.NOTHING;
 
     public int mRedirectCount = 0;
     public boolean mOnErrorCalled = false;
     public boolean mOnCanceledCalled = false;
@@ skipping 292 matching lines @@
         };
         if (mFailureType == FailureType.CANCEL_ASYNC
                 || mFailureType == FailureType.CANCEL_ASYNC_WITHOUT_PAUSE) {
             getExecutor().execute(task);
         } else {
             task.run();
         }
         return mFailureType != FailureType.CANCEL_ASYNC_WITHOUT_PAUSE;
     }
 }