Bug 891551 - Part 1: A couple of include-what-you-use fixes to the pre-existing code. r=ekr
Bug 891551 - Part 3: Fix bug where we weren't performing a null check in dtor for NrSocket (see also bug 987380). r=bwc
Bug 980027 - Part 1: Provide mechanism to set thread priorities. r=gsvelto, r=dhylands
Bug 980027 - Part 2: Set compositor thread priority to platform value. r=gsvelto, benwa
Bug 980027 - Part 3: Add compositor priority prefs to b2g.js. r=gsvelto