Use correct size for DrawingBuffer readback
Created attachment 182576 [details] Patch
Comment on attachment 182576 [details] Patch Looks good to me. Unfortunate that this code path is only exercised by printing and that a layout test can't be written.
Comment on attachment 182576 [details] Patch Clearing flags on attachment: 182576 Committed r139642: <http://trac.webkit.org/changeset/139642>
All reviewed patches have been landed. Closing bug.