The part in WebCore.pro that refers to missing install functionality is scoped under "symbian", however it should only apply to "symbian-abld" and "symbian-sbsv2". This is a followup to bug #45268 which was created with a little offset and didn't actually fix the build-failure.
Created attachment 67778 [details] patch
Comment on attachment 67778 [details] patch Clearing flags on attachment: 67778 Committed r67657: <http://trac.webkit.org/changeset/67657>
All reviewed patches have been landed. Closing bug.