Instrument CronetUrlRequestTest#testThrowOrCancelInOnCanceled flaky test

components/cronet/android/test/javatests/src/org/chromium/net/CronetUrlRequestContextTest.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.content.Context;
 import android.content.ContextWrapper;
 import android.os.ConditionVariable;
 import android.os.Handler;
@@ skipping 1204 matching lines @@
         checkRequestCaching(testFramework.mCronetEngine, url, true);
 
         // Cache is disabled after server is shut down, request should fail.
         TestUrlRequestCallback callback = new TestUrlRequestCallback();
         UrlRequest.Builder urlRequestBuilder = testFramework.mCronetEngine.newUrlRequestBuilder(
                 url, callback, callback.getExecutor());
         urlRequestBuilder.disableCache();
         urlRequestBuilder.build().start();
         callback.blockForDone();
         assertNotNull(callback.mError);
-        assertEquals("Exception in CronetUrlRequest: net::ERR_CONNECTION_REFUSED",
+        assertContains("Exception in CronetUrlRequest: net::ERR_CONNECTION_REFUSED",
                 callback.mError.getMessage());
     }
 
     @SmallTest
     @Feature({"Cronet"})
     public void testEnableHttpCacheDiskNewEngine() throws Exception {
         final CronetTestFramework testFramework =
                 startCronetTestFrameworkWithCacheEnabled(CronetEngine.Builder.HTTP_CACHE_DISK);
         String url = NativeTestServer.getFileURL("/cacheable.txt");
         checkRequestCaching(testFramework.mCronetEngine, url, false);
@@ skipping 246 matching lines @@
         TestUrlRequestCallback callback = new TestUrlRequestCallback();
         URL requestUrl =
                 new URL("http", resolverTestHostname, testUrl.getPort(), testUrl.getFile());
         UrlRequest.Builder urlRequestBuilder = testFramework.mCronetEngine.newUrlRequestBuilder(
                 requestUrl.toString(), callback, callback.getExecutor());
         urlRequestBuilder.build().start();
         callback.blockForDone();
         assertEquals(200, callback.mResponseInfo.getHttpStatusCode());
     }
 }