Testing a fix to crbug.com/456059.

Source/core/svg/SVGScriptElement.cpp

Index: Source/core/svg/SVGScriptElement.cpp
diff --git a/Source/core/svg/SVGScriptElement.cpp b/Source/core/svg/SVGScriptElement.cpp
index 36b3a19a23ad23567f993480b47797a39aafa565..d07570a6ff28536f9b97717b308bb7573649f42d 100644
--- a/Source/core/svg/SVGScriptElement.cpp
+++ b/Source/core/svg/SVGScriptElement.cpp
@@ -88,8 +88,14 @@ void SVGScriptElement::childrenChanged(const ChildrenChange& change)
 
 void SVGScriptElement::didMoveToNewDocument(Document& oldDocument)
 {
-    if (RefPtrWillBeRawPtr<Document> contextDocument = document().contextDocument().get())
-        oldDocument.scriptRunner()->movePendingAsyncScript(contextDocument->scriptRunner(), m_loader.get());
+    RefPtrWillBeRawPtr<Document> contextDocument = document().contextDocument().get();
+    if (!contextDocument)
+        contextDocument = &document();
+    RefPtrWillBeRawPtr<Document> oldContextDocument = oldDocument.contextDocument().get();
+    if (!oldContextDocument)
+        oldContextDocument = &oldDocument;
+    if (oldContextDocument != contextDocument)
+        oldContextDocument->scriptRunner()->movePendingAsyncScript(contextDocument->scriptRunner(), m_loader.get());
     SVGElement::didMoveToNewDocument(oldDocument);
 }