Reduce frequency of requesting bookmark clusters.

components/enhanced_bookmarks/bookmark_server_cluster_service.cc

Index: components/enhanced_bookmarks/bookmark_server_cluster_service.cc
diff --git a/components/enhanced_bookmarks/bookmark_server_cluster_service.cc b/components/enhanced_bookmarks/bookmark_server_cluster_service.cc
index ca38c1c145d2650c42d5ddf116ae7fbae5867503..c3d0c15866ae32b61e88a9de00638bd0cab67603 100644
--- a/components/enhanced_bookmarks/bookmark_server_cluster_service.cc
+++ b/components/enhanced_bookmarks/bookmark_server_cluster_service.cc
@@ -190,6 +190,12 @@ void BookmarkServerClusterService::EnhancedBookmarkRemoved(
   // filtered in ClustersForBookmark() this is not strictly necessary.
 }
 
+void BookmarkServerClusterService::EnhancedBookmarkNodeChanged(
+    BookmarkModel* model,
+    const BookmarkNode* node) {
+  // Nothing to do.
+}
+
 void BookmarkServerClusterService::EnhancedBookmarkAllUserNodesRemoved() {
   if (!cluster_data_.empty()) {
     ClusterMap empty;