Compilation fails in ScrollAnimatorNone.h[1] if RequestAnimationFrame feature is disabled. This started to occur after r110185[2]. A few ways of fixing this - set ENABLE_SCROLL_ANIMATOR=1 in GNUmakefile.am only if RequestAnimationFrame feature is enabled - refactor some of the WebCore code to always provide either a DisplayRefreshMonitor if provided or a fallback timer implementation. [1] http://trac.webkit.org/browser/trunk/Source/WebCore/platform/ScrollAnimatorNone.h#L37 [2] http://trac.webkit.org/changeset/110185
The feature enabling is now rigid enough to not allow disabling the requestAnimationFrame feature support. Closing this as WONTFIX.