Implement getSentBytesCount() in Cronet UrlRequest metrics

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

 // Copyright 2015 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.test.suitebuilder.annotation.LargeTest;
 import android.test.suitebuilder.annotation.SmallTest;
 
@@ skipping 217 matching lines @@
         assertEquals(200, callback.mResponseInfo.getHttpStatusCode());
         assertEquals("quic/1+spdy/3", callback.mResponseInfo.getNegotiatedProtocol());
 
         RequestFinishedInfo requestInfo = requestFinishedListener.getRequestInfo();
         assertNotNull(requestInfo);
         RequestFinishedInfo.Metrics metrics = requestInfo.getMetrics();
         assertNotNull(metrics);
 
         MetricsTestUtil.checkTimingMetrics(metrics, startTime, endTime);
         MetricsTestUtil.checkHasConnectTiming(metrics, startTime, endTime, true);
+        assertTrue(metrics.getSentBytesCount() > 0);
 
         // Second request should use the same connection and not have ConnectTiming numbers
         callback = new TestUrlRequestCallback();
         requestFinishedListener.reset();
         requestBuilder = new UrlRequest.Builder(
                 quicURL, callback, callback.getExecutor(), mTestFramework.mCronetEngine);
         startTime = new Date();
         requestBuilder.build().start();
         callback.blockForDone();
         requestFinishedListener.blockUntilDone();
         endTime = new Date();
 
         assertEquals(200, callback.mResponseInfo.getHttpStatusCode());
         assertEquals("quic/1+spdy/3", callback.mResponseInfo.getNegotiatedProtocol());
 
         requestInfo = requestFinishedListener.getRequestInfo();
         assertNotNull(requestInfo);
         metrics = requestInfo.getMetrics();
         assertNotNull(metrics);
 
         MetricsTestUtil.checkTimingMetrics(metrics, startTime, endTime);
         MetricsTestUtil.checkNoConnectTiming(metrics);
+        assertTrue(metrics.getSentBytesCount() > 0);
 
         mTestFramework.mCronetEngine.shutdown();
     }
 }