Merge branch 'master' of https://android.googlesource.com/platform/frameworks/volley

Author: mcxiaoke

src/com/android/volley/Request.java

@@ -166,6 +166,13 @@ public Object getTag() {
         return mTag;
     }
 
+    /**
+     * @return this request's {@link com.android.volley.Response.ErrorListener}.
+     */
+    public Response.ErrorListener getErrorListener() {
+        return mErrorListener;
+    }
+
     /**
      * @return A tag for use with {@link TrafficStats#setThreadStatsTag(int)}
      */