Bug 1418244 - Add missing headers to MSE SourceBufferResource and TrackBuffersManager. r=cpearce

dom/media/mediasource/SourceBufferResource.h

@@ -7,6 +7,7 @@
 #ifndef MOZILLA_SOURCEBUFFERRESOURCE_H_
 #define MOZILLA_SOURCEBUFFERRESOURCE_H_
 
+#include "mozilla/AbstractThread.h"
 #include "mozilla/Logging.h"
 #include "MediaResource.h"
 #include "nsIPrincipal.h"

dom/media/mediasource/TrackBuffersManager.cpp

@@ -9,6 +9,7 @@
 #include "MediaPrefs.h"
 #include "MediaSourceDemuxer.h"
 #include "MediaSourceUtils.h"
+#include "mozilla/ErrorResult.h"
 #include "mozilla/Preferences.h"
 #include "SourceBuffer.h"
 #include "SourceBufferResource.h"