diff --git a/dom/media/MediaDecoder.h b/dom/media/MediaDecoder.h
index 5507fea1212..3d97622b394 100644
--- a/dom/media/MediaDecoder.h
+++ b/dom/media/MediaDecoder.h
@@ -203,7 +203,6 @@ destroying the MediaDecoder object.
 #include "nsITimer.h"
 
 #include "AbstractMediaDecoder.h"
-#include "DecodedStream.h"
 #include "MediaDecoderOwner.h"
 #include "MediaEventSource.h"
 #include "MediaMetadataManager.h"
diff --git a/dom/media/MediaDecoderStateMachine.cpp b/dom/media/MediaDecoderStateMachine.cpp
index f0d4c103a24..7d845b0235b 100644
--- a/dom/media/MediaDecoderStateMachine.cpp
+++ b/dom/media/MediaDecoderStateMachine.cpp
@@ -16,6 +16,7 @@
 #include "MediaTimer.h"
 #include "mediasink/DecodedAudioDataSink.h"
 #include "mediasink/AudioSinkWrapper.h"
+#include "mediasink/DecodedStream.h"
 #include "nsTArray.h"
 #include "MediaDecoder.h"
 #include "MediaDecoderReader.h"
@@ -39,7 +40,6 @@
 #include "gfx2DGlue.h"
 #include "nsPrintfCString.h"
 #include "DOMMediaStream.h"
-#include "DecodedStream.h"
 #include "mozilla/Logging.h"
 
 #include <algorithm>
diff --git a/dom/media/MediaDecoderStateMachine.h b/dom/media/MediaDecoderStateMachine.h
index b3067cfabf6..73604e914bd 100644
--- a/dom/media/MediaDecoderStateMachine.h
+++ b/dom/media/MediaDecoderStateMachine.h
@@ -94,7 +94,6 @@ hardware (via AudioStream).
 #include "MediaEventSource.h"
 #include "MediaMetadataManager.h"
 #include "MediaTimer.h"
-#include "DecodedStream.h"
 #include "ImageContainer.h"
 
 namespace mozilla {
@@ -104,6 +103,7 @@ class MediaSink;
 }
 
 class AudioSegment;
+class DecodedStream;
 class TaskQueue;
 
 extern PRLogModuleInfo* gMediaDecoderLog;
diff --git a/dom/media/mediasink/moz.build b/dom/media/mediasink/moz.build
index abab5c68cd1..931bf0fd59c 100644
--- a/dom/media/mediasink/moz.build
+++ b/dom/media/mediasink/moz.build
@@ -7,6 +7,7 @@
 UNIFIED_SOURCES += [
     'AudioSinkWrapper.cpp',
     'DecodedAudioDataSink.cpp',
+    'DecodedStream.cpp',
 ]
 
 FINAL_LIBRARY = 'xul'
diff --git a/dom/media/moz.build b/dom/media/moz.build
index c4e07581a09..23cb8fa4df3 100644
--- a/dom/media/moz.build
+++ b/dom/media/moz.build
@@ -107,7 +107,6 @@ EXPORTS += [
     'AudioStream.h',
     'BufferMediaResource.h',
     'CubebUtils.h',
-    'DecodedStream.h',
     'DecoderTraits.h',
     'DOMMediaStream.h',
     'EncodedBufferCache.h',
@@ -202,7 +201,6 @@ UNIFIED_SOURCES += [
     'AudioTrackList.cpp',
     'CanvasCaptureMediaStream.cpp',
     'CubebUtils.cpp',
-    'DecodedStream.cpp',
     'DOMMediaStream.cpp',
     'EncodedBufferCache.cpp',
     'FileBlockCache.cpp',