In bug 21747 it's mentioned that anthonyd owns the frontend bug, but much searching revealed no bug. This bug is to track the status of implementing the frontend UI to allow users to easily copy images from a web page directly into their clipboard.
reasssinging to cmanske.
This should not require any extra UI at all. Using "copy" on an image should put both the current clipboard flavors as well as actual bits (CF_BITMAP in windows). This is how it works in Netscape 4.x I added a coment go bug 21747 to confirm this and will mark this invalid if true.
Marking invalid -- no UI necessary