[Cronet] Mark request as complete when OutputStream fails

components/cronet/android/java/src/org/chromium/net/urlconnection/CronetChunkedOutputStream.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.urlconnection;
 
 import org.chromium.net.UploadDataProvider;
 import org.chromium.net.UploadDataSink;
 
 import java.io.IOException;
@@ skipping 127 matching lines @@
 
     /**
      * Helper function to upload {@code mBuffer} to the native stack. This
      * function blocks until {@code mBuffer} is consumed and there is space to
      * write more data.
      */
     private void uploadBufferInternal() throws IOException {
         checkNotClosed();
         mBuffer.flip();
         mMessageLoop.loop();
+        checkNoException();
     }
 }