[ios] Fixed SSL Interstitial reload.

ios/web/interstitials/web_interstitial_impl.mm

Index: ios/web/interstitials/web_interstitial_impl.mm
diff --git a/ios/web/interstitials/web_interstitial_impl.mm b/ios/web/interstitials/web_interstitial_impl.mm
index 35d785a8e9dfe9018f163fb285abb34551bcff79..fb5ef39d6c0d90c6e3d2192c15303c478cfd2910 100644
--- a/ios/web/interstitials/web_interstitial_impl.mm
+++ b/ios/web/interstitials/web_interstitial_impl.mm
@@ -83,11 +83,16 @@ void WebInterstitialImpl::DontProceed() {
 
   // Clear the pending entry, since that's the page that's not being
   // proceeded to.
-  GetWebStateImpl()->GetNavigationManager()->DiscardNonCommittedItems();
+  NavigationManager* nav_manager = GetWebStateImpl()->GetNavigationManager();
+  nav_manager->DiscardNonCommittedItems();
 
   Hide();
 
   GetDelegate()->OnDontProceed();
+
+  // Reload last committed entry.
+  nav_manager->Reload(true /* check_for_repost */);
+
   delete this;
 }