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

ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm

 // 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.
 
 #include "ios/chrome/browser/ssl/ios_ssl_error_handler.h"
 
 #include "base/mac/bind_objc_block.h"
 #include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
 #include "ios/web/public/interstitials/web_interstitial.h"
 #import "ios/web/public/test/web_test_with_web_state.h"
@@ skipping 17 matching lines @@
   IOSSSLErrorHandlerTest()
       : browser_state_(builder_.Build()),
         cert_(net::ImportCertFromFile(net::GetTestCertsDirectory(),
                                       kTestCertFileName)) {}
 
   // web::WebTestWithWebState overrides:
   void SetUp() override {
     web::WebTestWithWebState::SetUp();
     ASSERT_TRUE(cert_);
     ASSERT_FALSE(web_state()->IsShowingWebInterstitial());
-
-    // Transient item can only be added for pending non-app-specific loads.
-    AddPendingItem(GURL(kTestHostName),
-                   ui::PageTransition::PAGE_TRANSITION_TYPED);
   }
   web::BrowserState* GetBrowserState() override { return browser_state_.get(); }
 
   // Returns certificate for testing.
   scoped_refptr<net::X509Certificate> cert() { return cert_; }
 
  private:
   TestChromeBrowserState::Builder builder_;
   std::unique_ptr<TestChromeBrowserState> browser_state_;
   scoped_refptr<net::X509Certificate> cert_;
@@ skipping 61 matching lines @@
 
   // Make sure that interstitial is displayed.
   EXPECT_TRUE(web_state()->IsShowingWebInterstitial());
   web::WebInterstitial* interstitial = web_state()->GetWebInterstitial();
   EXPECT_TRUE(interstitial);
 
   // Make sure callback is called on dismissal.
   interstitial->DontProceed();
   EXPECT_TRUE(do_not_proceed_callback_called);
 }