Remove offline copy when the URL of a bookmark is changed

components/offline_pages/offline_page_model.h

Index: components/offline_pages/offline_page_model.h
diff --git a/components/offline_pages/offline_page_model.h b/components/offline_pages/offline_page_model.h
index 628de2aa052f39bd97ef4da1c033562dfb8ac791..c6e93f2ed9fe18b387ab92a46c0bf9a9b9914f3a 100644
--- a/components/offline_pages/offline_page_model.h
+++ b/components/offline_pages/offline_page_model.h
@@ -214,6 +214,8 @@ class OfflinePageModel : public KeyedService,
                            int old_index,
                            const bookmarks::BookmarkNode* node,
                            const std::set<GURL>& removed_urls) override;
+  void BookmarkNodeChanged(bookmarks::BookmarkModel* model,
+                           const bookmarks::BookmarkNode* node) override;
 
   // Callback for ensuring archive directory is created.
   void OnEnsureArchivesDirCreatedDone();