--- a/dom/html/HTMLMediaElement.cpp
+++ b/dom/html/HTMLMediaElement.cpp
@@ -64,16 +64,17 @@
 #include "nsURIHashKey.h"
 #include "nsJSUtils.h"
 #include "MediaStreamGraph.h"
 #include "nsIScriptError.h"
 #include "nsHostObjectProtocolHandler.h"
 #include "mozilla/dom/MediaSource.h"
 #include "MediaMetadataManager.h"
 #include "MediaSourceDecoder.h"
+#include "DOMMediaStream.h"
 #include "AudioStreamTrack.h"
 #include "VideoStreamTrack.h"
 #include "MediaTrackList.h"
 
 #include "AudioChannelService.h"
 
 #include "mozilla/dom/power/PowerManagerService.h"
 #include "mozilla/dom/WakeLock.h"

--- a/dom/html/HTMLMediaElement.h
+++ b/dom/html/HTMLMediaElement.h
@@ -7,17 +7,16 @@
 #define mozilla_dom_HTMLMediaElement_h
 
 #include "nsIDOMHTMLMediaElement.h"
 #include "nsGenericHTMLElement.h"
 #include "MediaDecoderOwner.h"
 #include "nsCycleCollectionParticipant.h"
 #include "nsIObserver.h"
 #include "mozilla/CORSMode.h"
-#include "DOMMediaStream.h"
 #include "DecoderTraits.h"
 #include "nsIAudioChannelAgent.h"
 #include "mozilla/Attributes.h"
 #include "mozilla/dom/Promise.h"
 #include "mozilla/dom/TextTrackManager.h"
 #include "MediaDecoder.h"
 #ifdef MOZ_EME
 #include "mozilla/dom/MediaKeys.h"
@@ -35,16 +34,17 @@
 
 // Define to output information on decoding and painting framerate
 /* #define DEBUG_FRAME_RATE 1 */
 
 typedef uint16_t nsMediaNetworkState;
 typedef uint16_t nsMediaReadyState;
 
 namespace mozilla {
+class DOMMediaStream;
 class ErrorResult;
 class MediaResource;
 class MediaDecoder;
 class VideoFrameContainer;
 namespace dom {
 class MediaKeys;
 class TextTrack;
 class TimeRanges;