Bug 858772 - Fail if the checkForUpdate request fails instead of timing out. r=fabrice
Bug 970007 - Fix incorrect colorformat when using CairoSurface. r=gal r=bas
Bug 974017 - Update vtt.js r=rillian.
This update contains the optimization for rendering cues
with large line values. It also reverts the change to clamp
parsed line values to between -1000 and 1000.
Bug 992778 - Set docshell.chromeEventHandler in child processes. r=bz