Include the SkRTreeFactory headers in the skwasm picture recorder (#43292)

lib/web_ui/skwasm/picture.cpp

diff --git a/lib/web_ui/skwasm/picture.cpp b/lib/web_ui/skwasm/picture.cpp
index ec72b4c..aac6465 100644
--- a/lib/web_ui/skwasm/picture.cpp
+++ b/lib/web_ui/skwasm/picture.cpp
@@ -4,6 +4,8 @@
 
 #include "export.h"
 #include "helpers.h"
+#include "third_party/skia/include/core/SkBBHFactory.h"
+#include "third_party/skia/include/core/SkPicture.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
 #include "wrappers.h"