Unload Tab command to tab's context menu.

[rey]

This menu already becomes too long.
You can add a bookmark item "chrome://kill/" or "chrome://crash/", and click it when you wan to unload tab.

Well, it becomes long 'cause there some seldom used actions added, like "generate qr-code"(which at the same time has url bar button for very same action) or "disable mouse gestures on this site".
The proposed solution is not good, it kills/crashes whole "tree of branches". If i open few pages of this forum and use these commands on any tab - it will kill all tabs of this forum = obviously not what middle click in all tabs menu does.

BTW i have another proposition. Why middle-click and double-left-click both close the tab?! As users are used to opening new links via middle-click(well, those with mouse) so closing with middle is natural, then how about giving an option to "double-click for hibernate tab"?