

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).
