Bug 847208 - Make RemoveFloat() check the PushedFloatsList too.  r=dbaron
Bug 847208 - Reuse RemoveFloat() in a couple of places that did manual removal of a float child frame.  r=dbaron
Bug 847209 - Don't assert if the frame is in the kOverflowList child list.  r=bzbarsky
Bug 849603 - Make sure we use StartRemoveFrame for the first (existing) list to remove from.  r=bzbarsky
Bug 850964 - Remove obsolete NS_FRAME_INVALIDATE_ON_MOVE flag.  r=roc
Bug 849219 - Store the scroll state also when the position is 0,0 to avoid scrolling to an #ID on reload.  r=roc
Bug 851485 - Restoring scroll position from history should only suppress one scroll-to-anchor.  r=bzbarsky
Bug 851485 - test.
Bug 848932 - fix action chains so they return at the right time, r=mdas