Bug 1190492 - Init AbstractThread statics from XPCOM. r=froydnj

dom/media/MediaDecoder.cpp

@@ -129,7 +129,6 @@ void
 MediaDecoder::InitStatics()
 {
   MOZ_ASSERT(NS_IsMainThread());
-  AbstractThread::InitStatics();
 
   // Log modules.
   gMediaDecoderLog = PR_NewLogModule("MediaDecoder");

xpcom/build/XPCOMInit.cpp

@@ -6,6 +6,7 @@
 
 #include "base/basictypes.h"
 
+#include "mozilla/AbstractThread.h"
 #include "mozilla/Atomics.h"
 #include "mozilla/Poison.h"
 #include "mozilla/SharedThreadPool.h"
@@ -718,6 +719,9 @@ NS_InitXPCOM2(nsIServiceManager** aResult,
   // Init SharedThreadPool (which needs the service manager).
   SharedThreadPool::InitStatics();
 
+  // Init AbstractThread.
+  AbstractThread::InitStatics();
+
   // Force layout to spin up so that nsContentUtils is available for cx stack
   // munging.
   nsCOMPtr<nsISupports> componentLoader =