Update ResponseInfo to UrlResponseInfo with API review comments.

components/cronet/android/java/src/org/chromium/net/ResponseInfo.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.Pair;
-
-import java.util.List;
-import java.util.Map;
-
-/**
- * Contains basic information about a response. Sent to the embedder whenever
- * headers are received.
- */
-public interface ResponseInfo {
-    /**
-     * Returns the URL the response is for. This is the URL after following
-     * redirects, so it may not be the originally requested URL.
-     * @return the URL the response is for.
-     */
-    String getUrl();
-
-    /**
-     * Returns the URL chain. The first entry is the origianlly requested URL;
-     * the following entries are redirects followed.
-     * @return the URL chain.
-     */
-    String[] getUrlChain();
-
-    /**
-     * Returns the HTTP status code. When a resource is retrieved from the cache,
-     * whether it was revalidated or not, the original status code is returned.
-     * @return the HTTP status code.
-     */
-    int getHttpStatusCode();
-
-    /**
-     * Returns the HTTP status text of the status line. For example, if the
-     * request has a "HTTP/1.1 200 OK" response, this method returns "OK".
-     * @return the HTTP status text of the status line.
-     */
-    String getHttpStatusText();
-
-    /**
-     * Returns an unmodifiable list of response header field and value pairs.
-     * The headers are in the same order they are received over the wire.
-     * @return an unmodifiable list of response header field and value pairs.
-     */
-    List<Pair<String, String>> getAllHeadersAsList();
-
-    /**
-     * Returns an unmodifiable map of the response-header fields and values.
-     * Each list of values for a single header field is in the same order they
-     * were received over the wire.
-     * @return an unmodifiable map of the response-header fields and values.
-     */
-    Map<String, List<String>> getAllHeaders();
-
-    /**
-     * Returns {@code true} if the response came from the cache, including
-     * requests that were revalidated over the network before being retrieved
-     * from the cache.
-     * @return {@code true} if the response came from the cache, {@code false}
-     *         otherwise.
-     */
-    boolean wasCached();
-
-    /**
-     * Returns the protocol (e.g. "quic/1+spdy/3") negotiated with the server.
-     * Returns an empty string if no protocol was negotiated, the protocol is
-     * not known, or when using plain HTTP or HTTPS.
-     * @return the protocol negotiated with the server.
-     */
-    // TODO(mef): Figure out what this returns in the cached case, both with
-    // and without a revalidation request.
-    String getNegotiatedProtocol();
-
-    /**
-     * Returns the proxy server that was used for the request.
-     * @return the proxy server that was used for the request.
-     */
-    String getProxyServer();
-};