[CoordGraphics] Remove TiledBackingStoreClient inheritance from CoordinatedGraphicsLayer
Created attachment 347799 [details] Patch
Created attachment 347905 [details] Patch for landing
Comment on attachment 347905 [details] Patch for landing Clearing flags on attachment: 347905 Committed r235218: <https://trac.webkit.org/changeset/235218>
All reviewed patches have been landed. Closing bug.
<rdar://problem/43633830>