Fix the Windows build

* html/ImageBitmap.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@250777 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
index d1ef705..ee51082b 100644
--- a/Source/WebCore/ChangeLog
+++ b/Source/WebCore/ChangeLog
@@ -1,3 +1,9 @@
+2019-10-07  Tim Horton  <timothy_horton@apple.com>
+
+        Fix the Windows build
+
+        * html/ImageBitmap.h:
+
 2019-10-07  Zalan Bujtas  <zalan@apple.com>
 
         [LFC] Add const version of LayoutState::displayBoxForLayoutBox
diff --git a/Source/WebCore/html/ImageBitmap.h b/Source/WebCore/html/ImageBitmap.h
index 9a1eeff..7050561 100644
--- a/Source/WebCore/html/ImageBitmap.h
+++ b/Source/WebCore/html/ImageBitmap.h
@@ -29,6 +29,10 @@
 #include "ScriptWrappable.h"
 #include <wtf/RefCounted.h>
 
+namespace JSC {
+class ArrayBuffer;
+}
+
 namespace WebCore {
 
 class Blob;