Bug 811403 (Part 1) - Take scrollbars into account for viewport units if 'overflow: scroll' is set. r=dbaron
Bug 811403 (Part 2) - Tests for viewport unit interactions with overflow values of scroll and auto. r=dbaron
Bug 854763 (part 2) - Include asm.js arrays the standalone "explicit" reporter, and fix some potential leaks involving asm.js array buffers on Windows.  r=luke.

--HG--
extra : rebase_source : b4011174cf1c38604e65b15b246588be83d4f312
Bug 855526 - Don't assert on busted asm.js modules with more than 3 arguments.  r=luke.

--HG--
extra : rebase_source : 3d168e2bded38f499d563f00d0dcc245aa9d1a02