Bug 839312 - Give priorityClasses correct order and fix typo in b2g.js. r=jlebar
Bug 837856 - Rename hal_sandbox::IsHalChildLive() to HalChildDestroyed().

The return value stays the same (that is, the function was mis-named).
Bug 838625 - Add logcat logging to ProcessPriorityManager. r=cjones

The logging is placed behind an #if 0 guard.
Bug 838625 - Add hal::ProcessPriorityToString and use it in ProcessPriorityManager logging. r=cjones
Bug 838620 - Eliminate the ChildOSPrivileges typedef in favor of base::ChildPrivileges. r=cjones
Bug 838616 - Boost preallocated process's priority sooner after we decide to transform it into an app process. r=cjones
Bug 838616 - Eliminate a process-priority race condition around preallocated process creation. r=cjones

Previously, it was possible to return a dead preallocated process.  This
patch eliminates or at least significantly reduces the likelihood of
this race.
Bug 838615 - Add missing process-priority nice values to b2g.js. r=cjones

This sets background_perceivable's nice at 10 and
background{,_homescreen}'s nice at 20.  I'm a bit worried that this will
de-prioritize background_perceivable so much that music players may
start skipping.  But we need to test.
Bug 835563 - When an iframe mozbrowser's embedder calls setVisible(false), immediately send the relevant process into the background (if none of its other frames are in the foreground).
Adding XXX comment.
Adding another XXX comment.
Changing some ResetPriority calls to ResetPriorityNow().
Changing some ResetPriorityNow's to ResetPriority.
Incomplete: Grab the CPU lock on behalf of another process.  This is ugly, and Vivien probably has a better approach.
More work on grabbing the CPU lock on behalf of another process.
Not compiled, but I think the wake-lock-on-behalf stuff is done.
It compiles now.
Seems to be working, for calls.
Adding a pref, but need to change how we dispatch the SystemMessageHandled event.
Bug 838616 - Followup (or file new bug): Explicitly check that the content process hasn't been killed.