The zoom factor is a qreal number but its value is truncated to an integer. So a cast to qreal is needed to avoid this issue.
Created attachment 58866 [details] Proposed patch.
Comment on attachment 58866 [details] Proposed patch. Clearing flags on attachment: 58866 Committed r61472: <http://trac.webkit.org/changeset/61472>
All reviewed patches have been landed. Closing bug.
Revision r61472 cherry-picked into qtwebkit-2.0 with commit 9a60ada0538b8baf4a44b747b267e3cc7f30801c