You can ever add new url, and change all url_ranks to move your new url into 'Most Visited'.
Now you can edit the database, changing url_ranks to reorder sites (you should shift half of url_ranks, if you are inserting in middle). You can see them with such SQL query (via 'Execute SQL' tab in sqlitebrowser or by using sqlite3 ~/.config/chromium/Default/Top\ Sites command line tool): select url, url_rank, at_top from thumbnails order by url_rank Only eight sites with smallest ' url rank' and not blacklisted by user are shown. We ( and forensics experts) can see much more entries than is shown in 'Most Visited'. Open thumbnails table in Browse Data tab. Sqlitebrowser ~/.config/chromium/Default/Top\ Sites
To edit it, close the Chromium/Chrome and run for GUI editor sudo apt-get install sqlitebrowser The 'Top Sites' database is located in user profile directory, the default one is ' ~/.config/chromium/Default/Top Sites' (for chrome: ~/.config/google-chrome/default, in windows C:\Documents and Settings\%USERNAME%\Local Settings\Application Data\Google\Chrome\User Data\Default). 'Most Visited' section on new tab in Chrome/Chromium can be edited by hand, by directly changing 'Top Sites' sqlite3 database inside Chrome/Chromium with sqlite3 and SQL (or by any other sqlite3 db editor, like sqlitebrowser).
