Merge m-c to UX
Bug 862998 - Make UITour compatible with Australis, r=dolske
Bug 885057 - fix panel arrow colour issue in customize mode, r=dao
Bug 927917 - Middle-clicking on the items in the History subview should open them in a new tab. r=mikedeboer
Bug 924933 - Follow-up to fix the separator styling for the zoom controls. r=Gijs
Bug 909779 - Toolbar Overflow isn't initialized correctly on newly opened windows. r=Gijs
Backed out changeset c198907c6ba6 (bug 909779)
Merge mozilla-central and ux
Bug 927717 - CustomizeMode _onDragOver does not handle the empty toolbar case, r=mconley
Automated merge with https://hg.mozilla.org/mozilla-central
Merge mozilla-central and ux
Merge mozilla-central and ux
Bug 879606 - draw top window border for XP modern themes when lwtheme is active, r=jaws
Bug 928419 - fix CSS error in indicator-aero.css, r=jaws
Bug 900593 - Remove parent flex stuff, r=jaws
Bug 894375 - change web developer tools tooltip, r=mconley
Merge mozilla-central and ux
Bug 890319 - about:customize doesn't work if we try to enter before the window has loaded, r=mikedeboer
Bug 875180 - When a tab scrolls into view, half of the curve remains out of view. r=Unfocused
Bug 860648 - shouldn't be able to dnd tabs in customize mode, r=mconley