Add SetSupportsQuic method to explicitly specify server that supports QUIC.

components/cronet/android/java/src/org/chromium/net/HttpUrlRequestFactoryConfig.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 org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
 /**
  * A config for HttpUrlRequestFactory, which allows runtime configuration of
  * HttpUrlRequestFactory.
  */
 public class HttpUrlRequestFactoryConfig {
     /**
      * Default config enables SPDY, QUIC, in memory http cache.
@@ skipping 62 matching lines @@
     }
 
     /**
      * String, path to directory for HTTP Cache and Cookie Storage.
      */
     public HttpUrlRequestFactoryConfig setStoragePath(String value) {
         return putString(UrlRequestContextConfig.STORAGE_PATH, value);
     }
 
     /**
+     * Explicitly mark |host| as supporting QUIC.
+     * Note that enableHttpCache(DISK) is needed to take advantage of 0-RTT
+     * connection establishment between sessions.
+     *
+     * @param host of the server that supports QUIC.
+     * @param port of the server that supports QUIC.
+     * @param alternatePort to use for QUIC.
+     */
+    public HttpUrlRequestFactoryConfig addQuicHint(String host,
+                                                   int port,
+                                                   int alternatePort) {
+        try {
+            JSONArray quicHints = mConfig.optJSONArray(
+                    UrlRequestContextConfig.QUIC_HINTS);
+            if (quicHints == null) {
+                quicHints = new JSONArray();
+                mConfig.put(UrlRequestContextConfig.QUIC_HINTS, quicHints);
+            }
+
+            JSONObject hint = new JSONObject();
+            hint.put(UrlRequestContextConfig.QUIC_HINT_HOST, host);
+            hint.put(UrlRequestContextConfig.QUIC_HINT_PORT, port);
+            hint.put(UrlRequestContextConfig.QUIC_HINT_ALT_PORT, alternatePort);
+            quicHints.put(hint);
+        } catch (JSONException e) {
+            ;
+        }
+        return this;
+    }
+
+    /**
      * Get JSON string representation of the config.
      */
     public String toString() {
         return mConfig.toString();
     }
 
     /**
      * Sets a boolean value in the config. Returns a reference to the same
      * config object, so you can chain put calls together.
      */
@@ skipping 27 matching lines @@
         try {
             mConfig.put(key, value);
         } catch (JSONException e) {
             ;
         }
         return this;
     }
 
     private JSONObject mConfig = new JSONObject();
 }