[Cronet] Allow UrlRequest bypass cache

components/cronet/android/java/src/org/chromium/net/UrlRequest.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;
 
 /**
  * HTTP request (GET, PUT or POST).
  * Note:  All methods must be called on the Executor passed in during creation.
  */
@@ skipping 73 matching lines @@
      */
     public boolean isPaused();
 
     /**
      * When resuming, any pending callback to the listener will be called
      * asynchronously.
      */
     public void resume();
 
     /**
+     * Disables cache for the request. If context is not set up to use cache,
+     * this call has no effect.
+     */
+    public void disableCache();
+
+    /**
      * Note:  There are deliberately no accessors for the results of the request
      * here.  Having none removes any ambiguity over when they are populated,
      * particularly in the redirect case.
      */
 }