Bug 890006 - Dynamic toolbar scrolling causing BrowserToolbar to show its background. r=mfinkle, a=lsblakk
Bug 890897 - Don't show overlay scrollbars when we don't end up scrolling the page because we're already at an acceptable place. r=roc, a=lsblakk
Bug 886576 - Fix screen-sized pages not revealing the toolbar. r=kats, a=bajaj

If a page changed size to be the exact size of the screen, the toolbar would
not be revealed.
Bug 892246 - Allow subdocument scrolling to reveal margins. r=kats, a=lsblakk

This adds a notification callback to PanZoomTarget that the PanZoomController
can call to notify GeckoLayerClient that a subdocument is being scrolled. This
allows GeckoLayerClient to call LayerMarginsAnimator and alter the margins
accordingly, stopping a page from trapping the toolbar on/off the screen with
a screen-covering subframe.
Bug 874158 - Crash in GetNativeForGlobal. r=bholley, a=lsblakk
Bug 892486 - Telemetry for appcache vs http cache page load. r=ehsan, a=bajaj
Bug 880377 - Make UCE abort if some blocks are only reachable from OSR entry point. r=bhackett, a=bajaj
Bug 880377 - Add tests. a=bajaj
Bug 892454 - Use a less fragile flag than zero frecency to skip the frecency update on visit. r=Mano, a=bajaj