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

ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm

Index: ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm
diff --git a/ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm b/ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm
index 2114a1eea468c4ff9e77b8afc177198200d45c16..5cb4f8515242492af0e3fc897189fcfa4b7b4b49 100644
--- a/ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm
+++ b/ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm
@@ -35,6 +35,10 @@ 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(); }