diff --git a/dom/media/platforms/wmf/MFMediaEngineStream.cpp b/dom/media/platforms/wmf/MFMediaEngineStream.cpp
index ff3bb97ba771..0c6a73ade00a 100644
--- a/dom/media/platforms/wmf/MFMediaEngineStream.cpp
+++ b/dom/media/platforms/wmf/MFMediaEngineStream.cpp
@@ -715,6 +715,40 @@ return
 true
 ;
 }
+bool
+MFMediaEngineStreamWrapper
+:
+:
+IsHardwareAccelerated
+(
+nsACString
+&
+aFailureReason
+)
+const
+{
+if
+(
+!
+mStream
+)
+{
+return
+false
+;
+}
+return
+mStream
+-
+>
+AsVideoStream
+(
+)
+!
+=
+nullptr
+;
+}
 MFMediaEngineStream
 :
 :
diff --git a/dom/media/platforms/wmf/MFMediaEngineStream.h b/dom/media/platforms/wmf/MFMediaEngineStream.h
index 5e89e20465df..d62151c2dd10 100644
--- a/dom/media/platforms/wmf/MFMediaEngineStream.h
+++ b/dom/media/platforms/wmf/MFMediaEngineStream.h
@@ -858,6 +858,16 @@ ShouldDecoderAlwaysBeRecycled
 const
 override
 ;
+bool
+IsHardwareAccelerated
+(
+nsACString
+&
+aFailureReason
+)
+const
+override
+;
 private
 :
 ~