We have a problem in the process on destroying WebContentsImpl because

chrome/browser/ui/website_settings/permission_bubble_manager.cc

Index: chrome/browser/ui/website_settings/permission_bubble_manager.cc
diff --git a/chrome/browser/ui/website_settings/permission_bubble_manager.cc b/chrome/browser/ui/website_settings/permission_bubble_manager.cc
index 670a864ae63054b78cdea6fc1506fbcb26a35060..902313a0853435bf8f03921ca8824698d5353f8f 100644
--- a/chrome/browser/ui/website_settings/permission_bubble_manager.cc
+++ b/chrome/browser/ui/website_settings/permission_bubble_manager.cc
@@ -140,8 +140,7 @@ void PermissionBubbleManager::NavigationEntryCommitted(
   }
 }
 
-void PermissionBubbleManager::WebContentsDestroyed(
-    content::WebContents* web_contents) {
+void PermissionBubbleManager::WebContentsDestroyed() {
   // If the web contents has been destroyed, do not attempt to notify
   // the requests of any changes - simply close the bubble.
   CancelPendingQueue();
@@ -150,7 +149,7 @@ void PermissionBubbleManager::WebContentsDestroyed(
   // The WebContents is going away; be aggressively paranoid and delete
   // ourselves lest other parts of the system attempt to add permission bubbles
   // or use us otherwise during the destruction.
-  web_contents->RemoveUserData(UserDataKey());
+  web_contents()->RemoveUserData(UserDataKey());
   // That was the equivalent of "delete this". This object is now destroyed;
   // returning from this function is the only safe thing to do.
 }