Set user agent type of transient item the same as pending item.

ios/web/public/test/web_test_with_web_state.h

 // Copyright 2016 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 IOS_WEB_PUBLIC_TEST_WEB_TEST_WITH_WEB_STATE_H_
 #define IOS_WEB_PUBLIC_TEST_WEB_TEST_WITH_WEB_STATE_H_
 
 #import "base/ios/block_types.h"
 #include "base/message_loop/message_loop.h"
 #include "ios/web/public/test/web_test.h"
+#include "ui/base/page_transition_types.h"
 #include "url/gurl.h"
 
 namespace web {
 
 class WebState;
 
 // Base test fixture that provides WebState for testing.
 class WebTestWithWebState : public WebTest,
                             public base::MessageLoop::TaskObserver {
  protected:
@@ skipping 21 matching lines @@
   // Destroys underlying WebState. web_state() will return null after this call.
   void DestroyWebState();
 
   // Returns the base URL of the loaded page.
   std::string BaseUrl() const;
 
   // Returns web state for this web controller.
   web::WebState* web_state();
   const web::WebState* web_state() const;
 
+  // Adds a pending item to the NavigationManager associated with the WebState.
+  void AddPendingItem(const GURL& url, ui::PageTransition transition);

[Eugene But (OOO till 7-30), 2017/04/04 18:22:31]

Could you please move this closer to LoadHtml. These seems more related that
AddPendingItem() and web_state()

[liaoyuke, 2017/04/04 21:15:40]

Done.

+
  private:
   // base::MessageLoop::TaskObserver overrides.
   void WillProcessTask(const base::PendingTask& pending_task) override;
   void DidProcessTask(const base::PendingTask& pending_task) override;
 
   // The web state for testing.
   std::unique_ptr<WebState> web_state_;
   // true if a task has been processed.
   bool processed_a_task_;
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_TEST_WEB_TEST_WITH_WEB_STATE_H_