Unreviewed build fix for Windows ports
https://bugs.webkit.org/show_bug.cgi?id=202630
<rdar://problem/56107907>

dom/Document.cpp(3990): error C2653: 'MediaStreamTrack': is not a class or namespace name
dom/Document.cpp(3990): error C3861: 'captureState': identifier not found

* dom/Document.cpp:
(WebCore::Document::updateIsPlayingMedia): Restored #if ENABLE(MEDIA_STREAM).

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@250906 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
index a336746..c37e5f7 100644
--- a/Source/WebCore/ChangeLog
+++ b/Source/WebCore/ChangeLog
@@ -1,3 +1,15 @@
+2019-10-09  Fujii Hironori  <Hironori.Fujii@sony.com>
+
+        Unreviewed build fix for Windows ports
+        https://bugs.webkit.org/show_bug.cgi?id=202630
+        <rdar://problem/56107907>
+
+        dom/Document.cpp(3990): error C2653: 'MediaStreamTrack': is not a class or namespace name
+        dom/Document.cpp(3990): error C3861: 'captureState': identifier not found
+
+        * dom/Document.cpp:
+        (WebCore::Document::updateIsPlayingMedia): Restored #if ENABLE(MEDIA_STREAM).
+
 2019-10-09  Antti Koivisto  <antti@apple.com>
 
         [CSS Shadow Parts] Mark as supported in features.json
diff --git a/Source/WebCore/dom/Document.cpp b/Source/WebCore/dom/Document.cpp
index 588d4fe..efb4267 100644
--- a/Source/WebCore/dom/Document.cpp
+++ b/Source/WebCore/dom/Document.cpp
@@ -3987,7 +3987,9 @@
     for (auto& audioProducer : m_audioProducers)
         state |= audioProducer.mediaState();
 
+#if ENABLE(MEDIA_STREAM)
     state |= MediaStreamTrack::captureState(*this);
+#endif
 
 #if ENABLE(MEDIA_SESSION)
     if (HTMLMediaElement* sourceElement = HTMLMediaElement::elementWithID(sourceElementID)) {