Force Chrome to sync bookmarks?
Another way to make a change is to bookmark a new page and delete the bookmark. This will force chrome to sync the bookmarks.
This is a way to force sync of all Chrome Sync features manually.
Go to Settings > Extensions, click to check Developer mode if it is not already enabled, and then click the Update extensions now button.
At this point, a sync occurs immediately for extensions, bookmarks and all Chrome Sync features. You may then check from your chrome address bar the chrome://sync/ page and observe on Local State / Last Synced, it should say "Just now".