[Qt] Build fix for Mac OS X when building as framework
[Qt] Build fix for Mac OS X when building as framework

WTFReportAssertionFailure is not exported, so building DRT in debug
mode against QtWebKit built as a framework failes to link.

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@50448 bbb929c8-8fbe-4397-9dbb-9b2b20218538
primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs