Clean up EditorClient lifetime
Created attachment 280960 [details]
Created attachment 280966 [details]
Created attachment 280967 [details]
Re-opened since this is blocked by bug 158609
This change appears to have broken the Windows build.
I guess I didn't wait for all the EWS bots :(
http://trac.webkit.org/changeset/201905 fixed it.
I wonder if this fixed bug 158401!