I have a couple of Web sites that have conflicting keyboard assignments with Google Chrome. For example, there are several sites where Ctrl+Shift+B (or Command+Shift+B on Mac) is a shortcut for Bold or Bullet, but this combination is already used by Chrome to toggle the visibility of the bookmarks toolbar.
The question is simply: how to disable this and similar shortcuts in Chrome so the shortcut/function of the web site will be in effect.
There are other similar posts, but please note that I want to disable a specific set of shortcuts, not add new shortcuts! So as far as I can see, applications/extensions like keyconfig or Shortcut Manager as described in customizing chromium keyboard shortcuts does not work.