This is an ebuild that installs the epiphany-extensions package which includes things like a popup blocker and mouse gestures. Note the KEYWORDS. Yes, I really did test it on x86 AND amd64.
Created attachment 29160 [details] epiphany-extensions-0.8.1.ebuild
oh, and of course, I recommend net-www/epiphany-extensions
*** This bug has been marked as a duplicate of 46486 ***