Move EventHandler::tabsToAllFormControls to ChromeClient Requested by dglazkov on #webkit.
We still have it here: https://searchfox.org/wubkat/rev/e65977cbea63da31c3c8c9644d8384bb27fe46d0/Source/WebCore/page/EventHandler.cpp#5178 Do we need to move it somewhere else? Or we can mark this as something more appropriate?