Bug 1039992 - Move the overscroll handoff chain into AsyncPanZoomController and have one per touch block or pan gesture. r=kats,bjacob,mstange

--HG--
rename : gfx/layers/apz/src/TouchBlockState.h => gfx/layers/apz/src/InputBlockState.h
extra : rebase_source : ee68595aa21b696de1a0fbb8e6c161022a88ba3d
Bug 1039992 - Fix a unified build issue. r=kats

--HG--
extra : rebase_source : 4e1e09c9bcb35f70c3ee7ff833646e5f437f5a86