Bug 1190492 - Hoist AbstractThread and TaskDispatcher to xpcom. r=froydnj

--HG--
rename : dom/media/AbstractThread.cpp => xpcom/threads/AbstractThread.cpp
rename : dom/media/AbstractThread.h => xpcom/threads/AbstractThread.h
rename : dom/media/TaskDispatcher.h => xpcom/threads/TaskDispatcher.h

Author: bholley

dom/media/moz.build

@@ -150,12 +150,10 @@ EXPORTS += [
 ]
 
 EXPORTS.mozilla += [
-    'AbstractThread.h',
     'MediaManager.h',
     'MozPromise.h',
     'StateMirroring.h',
     'StateWatching.h',
-    'TaskDispatcher.h',
     'TaskQueue.h',
 ]
 
@@ -194,7 +192,6 @@ EXPORTS.mozilla.dom += [
 ]
 
 UNIFIED_SOURCES += [
-    'AbstractThread.cpp',
     'AudioCaptureStream.cpp',
     'AudioChannelFormat.cpp',
     'AudioCompactor.cpp',

dom/media/AbstractThread.cpp renamed to xpcom/threads/AbstractThread.cpp

@@ -28,15 +28,18 @@ EXPORTS += [
 ]
 
 EXPORTS.mozilla += [
+    'AbstractThread.h',
     'BackgroundHangMonitor.h',
     'HangAnnotations.h',
     'HangMonitor.h',
     'LazyIdleThread.h',
     'SharedThreadPool.h',
     'SyncRunnable.h',
+    'TaskDispatcher.h',
 ]
 
 UNIFIED_SOURCES += [
+    'AbstractThread.cpp',
     'BackgroundHangMonitor.cpp',
     'HangAnnotations.cpp',
     'HangMonitor.cpp',