--- a/dom/media/MediaDecoderReaderWrapper.h
+++ b/dom/media/MediaDecoderReaderWrapper.h
@@ -4,16 +4,17 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #ifndef MediaDecoderReaderWrapper_h_
 #define MediaDecoderReaderWrapper_h_
 
 #include "mozilla/AbstractThread.h"
 #include "mozilla/RefPtr.h"
+#include "mozilla/Variant.h"
 #include "nsISupportsImpl.h"
 
 #include "MediaDecoderReader.h"
 #include "MediaEventSource.h"
 
 namespace mozilla {
 
 class StartTimeRendezvous;

--- a/dom/media/MediaDecoderStateMachine.h
+++ b/dom/media/MediaDecoderStateMachine.h
@@ -92,16 +92,17 @@ hardware (via AudioStream).
 #include "MediaDecoder.h"
 #include "MediaDecoderReader.h"
 #include "MediaDecoderOwner.h"
 #include "MediaEventSource.h"
 #include "MediaMetadataManager.h"
 #include "MediaStatistics.h"
 #include "MediaTimer.h"
 #include "ImageContainer.h"
+#include "SeekJob.h"
 #include "SeekTask.h"
 
 namespace mozilla {
 
 namespace media {
 class MediaSink;
 }
 

--- a/dom/media/SeekTask.h
+++ b/dom/media/SeekTask.h
@@ -4,24 +4,23 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #ifndef SEEK_TASK_H
 #define SEEK_TASK_H
 
 #include "mozilla/MozPromise.h"
 #include "MediaCallbackID.h"
-#include "SeekJob.h"
+#include "SeekTarget.h"
 
 namespace mozilla {
 
 class AbstractThread;
 class MediaData;
 class MediaDecoderReaderWrapper;
-class MediaInfo;
 
 namespace media {
 class TimeUnit;
 }
 
 struct SeekTaskResolveValue
 {
   RefPtr<MediaData> mSeekedAudioData;