Bug 1036068 - Update ANGLE to chromium/2084. r=jgilbert,kamidphish
Bug 1062406 - Part 2 - Tests. r=bz
- Implemented a mochitest to ensure that non-finite values passed to
  window.scroll, window.scrollTo, and window.scrollBy are interpreted
  as 0.
Bug 1062406 - Part 1 - Change x and y parameters of window.scroll* CSSOM-View DOM calls from double to unrestricted double. r=bz
- WebIDL updated so that x and y parameters of window.scroll, window.scrollTo,
  and window.ScrollBy are changed from "double" to "unrestricted double".
- Implemented mozilla::ToZeroIfNonfinite
- Updated nsGlobalWindow::Scroll, ScrollTo, and ScrollBy methods so that they
  replace non-finite numbers with 0.