Add SetSupportsQuic method to explicitly specify server that supports QUIC.

components/cronet/android/java/src/org/chromium/net/ChromiumUrlRequest.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.util.Log;
 
 import org.apache.http.conn.ConnectTimeoutException;
 import org.chromium.base.CalledByNative;
@@ skipping 372 matching lines @@
             return mCanceled;
         }
     }
 
     public boolean isRecycled() {
         synchronized (mLock) {
             return mRecycled;
         }
     }
 
+    @Override
+    public String getNegotiatedProtocol() {
+        validateNotRecycled();
+        validateHeadersAvailable();
+        return nativeGetNegotiatedProtocol(mUrlRequestAdapter);
+    }
+
     public String getContentType() {
         return mContentType;
     }
 
     public String getHeader(String name) {
+        validateNotRecycled();
         validateHeadersAvailable();
         return nativeGetHeader(mUrlRequestAdapter, name);
     }
 
     // All response headers.
     public Map<String, List<String>> getAllHeaders() {
+        validateNotRecycled();
         validateHeadersAvailable();
         ResponseHeadersMap result = new ResponseHeadersMap();
         nativeGetAllHeaders(mUrlRequestAdapter, result);
         return result;
     }
 
     public String getUrl() {
         return mUrl;
     }
 
@@ skipping 266 matching lines @@
 
     private native String nativeGetContentType(long urlRequestAdapter);
 
     private native long nativeGetContentLength(long urlRequestAdapter);
 
     private native String nativeGetHeader(long urlRequestAdapter, String name);
 
     private native void nativeGetAllHeaders(long urlRequestAdapter,
             ResponseHeadersMap headers);
 
+    private native String nativeGetNegotiatedProtocol(long urlRequestAdapter);
+
     // Explicit class to work around JNI-generator generics confusion.
     private class ResponseHeadersMap extends HashMap<String, List<String>> {
     }
 }