Share TestFeatures and TestCommand infrastructure between DumpRenderTree and WebKitTestRunner
Created attachment 411126 [details] Patch
Created attachment 411128 [details] Patch
Created attachment 411136 [details] Patch
Created attachment 411137 [details] Patch
Created attachment 411141 [details] Patch
Committed r268370: <https://trac.webkit.org/changeset/268370> All reviewed patches have been landed. Closing bug and clearing flags on attachment 411141 [details].
<rdar://problem/70224887>