Add a new "enter enhanced fullscreen" context menu item in the video context menu
<rdar://problem/24988068>
This is for Mac only with VIDEO_PRESENTATION_MODE enabled.
Created attachment 275223 [details] Patch
Comment on attachment 275223 [details] Patch Will fix compile error.
Created attachment 275224 [details] Patch
Created attachment 275230 [details] Patch
Committed: http://trac.webkit.org/changeset/198900