Bug 860338 - remove MOZ_WEBVTT. r=ted

The webvtt dom implementation and parser are a small amount of code.
Given the tendency of build-time switches to bitrot, it's not worth
keeping this one.

The webvtt dom implementation and parser are a small amount of code.
Given the tendency of build-time switches to bitrot, it's not worth
keeping this one.
Backed out changeset d757eeebcc43. r=bustage CLOSED TREE

Philor suggests I need to clobber.
No bug - Fix typo.
Bug 854614 - Root result and argument JS::Values. r=bz
Bug 673875 - Reproduce bounce behaviour when reaching top and bottom of documents. r=smichaud, r=felipc
Bug 673875 - Reenable guard for bug 770626 when swipe animations are disabled. r=smichaud
Bug 853707 - Fix bogus assert in StaticBehaviour::SetOwner. r=joedrew
Bug 857836 - Assertion failure: paTypeObject->getPropertyCount() == NumFixedSlots, at builtin/ParallelArray.cpp. r=bhackett
Bug 854788 - Add a missing recursion check on Proxy::objectClassIs. r=m_kato, r=Waldo
Bug 839956 - Size and position text decorations on SVG text correctly when a font size scale factor is in effect. r=roc
Bug 860591.  Install WebIDL quickstubs for event interfaces as needed.  r=smaug
Bug 861064.  Root WebIDL dictionary Init.  r=smaug,terrence
Bug 860457 - use uintptr_t instead of unsigned long in celldata.h; r=dholbert
Bug 859367 - make xpt.py use unpack_from instead of unpack; r=ted
Bug 859257 - include jscpucfg.h in NumericConversions.h so DoublePun definitions are correct; r=Waldo
Bug 861395 - Part 1: Log the `cause` exception that we report to Socorro. r=kats
Bug 861246 - Fix async scrolling of fixed layer margins. r=nrc

Make sure the fixed margins are sent over IPC to shadow layers.

--HG--
extra : rebase_source : ab26359f1ebf2ea130ee65d37249d43d1fd82aec
bug 861112 - (widget/gtk2) scaling from display to device pixels should only apply to top-level windows/dialogs/popups, not to child or plugin windows. r=roc
bug 838239 - check for possible DPI change when restoring content from browser history. r=roc
Bug 853818 - Followup: address missed review comment.