Add SetSupportsQuic method to explicitly specify server that supports QUIC.

components/cronet/android/java/src/org/chromium/net/HttpUrlConnectionUrlRequest.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.text.TextUtils;
 
 import org.apache.http.HttpStatus;
@@ skipping 404 matching lines @@
     }
 
     @Override
     public boolean isCanceled() {
         synchronized (mLock) {
             return mCanceled;
         }
     }
 
     @Override
+    public String getNegotiatedProtocol() {
+        return "";

[Charles, 2014/09/09 17:03:56]

http/1.1?

[mef, 2014/09/10 16:48:17]

From what I see Chromium stack returns empty string if it has not negotiated any
NPN protocol.

+    }
+
+    @Override
     public int getHttpStatusCode() {
         int httpStatusCode = mHttpStatusCode;
 
         // If we have been able to successfully resume a previously interrupted
         // download,
         // the status code will be 206, not 200. Since the rest of the
         // application is
         // expecting 200 to indicate success, we need to fake it.
         if (httpStatusCode == HttpStatus.SC_PARTIAL_CONTENT) {
             httpStatusCode = HttpStatus.SC_OK;
@@ skipping 63 matching lines @@
         }
         return mConnection.getHeaderFields();
     }
 
     private void validateNotStarted() {
         if (mStarted) {
             throw new IllegalStateException("Request already started");
         }
     }
 }