ResourceHandle has virtual methods but a non-virtual destructor. This can cause build warnings or errors. These virtual methods were added in http://trac.webkit.org/changeset/50772.
Created attachment 43940 [details] Patch 1 for Bug 31924
Comment on attachment 43940 [details] Patch 1 for Bug 31924 OK.
Please CC the folks who made the change when making a build fix. :) http://trac.webkit.org/changeset/50772
Already fixed in https://bugs.webkit.org/show_bug.cgi?id=31962, which was filed after this bug, but made it into the commit queue first.
*** This bug has been marked as a duplicate of bug 31962 ***