Reading List iOS: Adapt loading offline for new reload process

ios/web/web_state/ui/crw_web_controller.mm

Index: ios/web/web_state/ui/crw_web_controller.mm
diff --git a/ios/web/web_state/ui/crw_web_controller.mm b/ios/web/web_state/ui/crw_web_controller.mm
index c15eb0c28b87b3c90437e3146c956e359006209b..201c95cf06fbeeee80c7d92e8bdf8fd5c6a5b5f0 100644
--- a/ios/web/web_state/ui/crw_web_controller.mm
+++ b/ios/web/web_state/ui/crw_web_controller.mm
@@ -1803,7 +1803,9 @@ const NSTimeInterval kSnapshotOverlayTransition = 0.5;
   DCHECK(!(transition & ui::PAGE_TRANSITION_FORWARD_BACK));
   // This method is allowed to handle reload only for transient items, which
   // is essentially loading the same URL again.
-  DCHECK(!(transition & ui::PAGE_TRANSITION_RELOAD) ||
+  // If the web controller was displaying a native content, the native content
+  // can trigger a reload.
+  DCHECK(self.nativeController || !(transition & ui::PAGE_TRANSITION_RELOAD) ||
          self.navigationManagerImpl->GetTransientItem());
 
   BOOL initialNavigation = NO;