Adds a context menu to frames that allows opening them in a new tab, a new window, etc.
Adds a "This Frame" Context Menu. This was originally published at ttps://chrome.google.com/webstore/detail/ckegihlfolljbjmbaidfnnjjhondlpho but seems to have vanished. This has been updated for manifest_version 2.
- (2019-09-02) Marc: Exactly what's needed in chrome when working with frames !