Bug 841651: Implement PR_SetThreadPriority() on Linux-based platforms
using per-thread nice values.  The patch is contributed by Gabriele
Svelto <gsvelto@mozilla.com>.  r=wtc.
Bug 845337. When we are looking for the parent prescontext we may not have a root frame so use the root view instead to get the parent prescontext. r=roc
Bug 845095 - Disable mochitest states/test_tree.xul on Mac. r=dbolter
Bug 842495 - Cleanup contentDocument/contentWindow getters; r=mounir
Bug 838798 - Remove deprecated nsILivemarkService interface.
r=Mano sr=gavin
Bug 844530 - Paper over error in BrowserElementPromptService.jsm on B2G. r=khuey

The error we're fixing is

  E/GeckoConsole(  397): [JavaScript Error: "NS_ERROR_FACTORY_NOT_REGISTERED: Component returned failure code: 0x80040154 (NS_ERROR_FACTORY_NOT_REGISTERED)
  [nsIComponentManager.getClassObject]" {file: "resource://gre/modules/BrowserElementPromptService.jsm" line: 572}]

For some reason, we're running code before the vanilla prompt service is
instantiated.  We don't know why this is happening, but this patch works
around the problem on B2G, which is the only place where we ship this
code.
Bug 404077:  Adjust annotations of expected assertions.
Bug 404077:  Enable checking of assertions in mochitests.
Bug 845491: Make Plugin Hang UI push buttons automatically resize to fit their text. r=jmathies
bug 840776. Fix a typo :). r=mbrubeck
Bug 421746 - Remove unused strings. r=dolske, r=mfinkle
Bug 844326 - Use addSystemEventListener to receive all mouse/touch events. r=vingtetun