[Android Webview] Refactor LoadUrlTest and work on embedded_test_server custom handler

android_webview/embeddedtestserver/custom_handlers.h

+// Copyright 2017 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.
+
+#ifndef ANDROID_WEBVIEW_EMBEDDEDTESTSERVER_CUSTOM_HANDLERS_H_
+#define ANDROID_WEBVIEW_EMBEDDEDTESTSERVER_CUSTOM_HANDLERS_H_
+
+#include <stdlib.h>
+#include <sstream>
+#include <string>
+#include <utility>
+
+#include "base/android/scoped_java_ref.h"
+#include "base/base64.h"
+#include "net/test/embedded_test_server/embedded_test_server.h"
+#include "net/test/embedded_test_server/http_request.h"
+#include "net/test/embedded_test_server/http_response.h"
+
+namespace net {
+namespace test_server {
+
+std::unique_ptr<HttpResponse> HandleClickRedirect(const HttpRequest& request);
+
+std::vector<jlong> getHandlers();
+
+}  // namespace test_server
+}  // namespace net
+
+#endif  // ANDROID_WEBVIEW_EMBEDDEDTESTSERVER_CUSTOM_HANDLERS_H_