Instrument CronetUrlRequestTest#testThrowOrCancelInOnCanceled flaky test

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

 // Copyright 2016 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.ParcelFileDescriptor;
 import android.os.StrictMode;
 import android.test.suitebuilder.annotation.SmallTest;
@@ skipping 182 matching lines @@
             @Override
             public void rewind(UploadDataSink uploadDataSink) throws IOException {}
         }, callback.getExecutor());
         UrlRequest urlRequest = builder.build();
         urlRequest.start();
         first.block();
         callback.blockForDone();
         assertFalse(callback.mOnCanceledCalled);
         assertEquals(UrlRequestException.ERROR_LISTENER_EXCEPTION_THROWN,
                 callback.mError.getErrorCode());
-        assertEquals("Exception received from UploadDataProvider", callback.mError.getMessage());
-        assertEquals(exceptionMessage, callback.mError.getCause().getMessage());
+        assertContains("Exception received from UploadDataProvider", callback.mError.getMessage());
+        assertContains(exceptionMessage, callback.mError.getCause().getMessage());
     }
 
     @SmallTest
     @Feature({"Cronet"})
     // Tests that creating a ByteBufferUploadProvider using a byte array with an
     // offset gives a ByteBuffer with position 0. crbug.com/603124.
     public void testCreateByteBufferUploadWithArrayOffset() throws Exception {
         TestUrlRequestCallback callback = new TestUrlRequestCallback();
         // This URL will trigger a rewind().
         UrlRequest.Builder builder = mTestFramework.mCronetEngine.newUrlRequestBuilder(
                 NativeTestServer.getRedirectToEchoBody(), callback, callback.getExecutor());
         builder.addHeader("Content-Type", "useless/string");
         byte[] uploadData = LOREM.getBytes("UTF-8");
         int offset = 5;
         byte[] uploadDataWithPadding = new byte[uploadData.length + offset];
         System.arraycopy(uploadData, 0, uploadDataWithPadding, offset, uploadData.length);
         UploadDataProvider dataProvider =
                 UploadDataProviders.create(uploadDataWithPadding, offset, uploadData.length);
         assertEquals(uploadData.length, dataProvider.getLength());
         builder.setUploadDataProvider(dataProvider, callback.getExecutor());
         UrlRequest urlRequest = builder.build();
         urlRequest.start();
         callback.blockForDone();
         assertEquals(200, callback.mResponseInfo.getHttpStatusCode());
         assertEquals(LOREM, callback.mResponseAsString);
     }
 }