ASSERTION FAILED: isfinite(num)
../../../Source/WebCore/css/CSSPrimitiveValue.cpp(184) : WebCore::CSSPrimitiveValue::CSSPrimitiveValue(double, WebCore::CSSPrimitiveValue::UnitTypes)
The culprit might be http://trac.webkit.org/changeset/97248
It is unlikely that http://trac.webkit.org/changeset/97248 has anything to do with this as it only concerns code that runs well after any CSSPrimitiveValue construction.
As far as I remember it is a flakey assertion, we should check it in the buildbot history.
*** Bug 69000 has been marked as a duplicate of this bug. ***
*** Bug 72716 has been marked as a duplicate of this bug. ***