Merge 96984 - XSLT-generated document should inherit its SecurityOrigin from the source document

Source/WebCore/xml/XSLTProcessor.cpp

Index: Source/WebCore/xml/XSLTProcessor.cpp
===================================================================
--- Source/WebCore/xml/XSLTProcessor.cpp	(revision 97017)
+++ Source/WebCore/xml/XSLTProcessor.cpp	(working copy)
@@ -84,7 +84,13 @@
     if (frame) {
         if (FrameView* view = frame->view())
             view->clear();
-        result->setTransformSourceDocument(frame->document());
+
+        if (Document* oldDocument = frame->document()) {
+            result->setTransformSourceDocument(oldDocument);
+            result->setSecurityOrigin(oldDocument->securityOrigin());
+            result->setCookieURL(oldDocument->cookieURL());
+        }
+
         frame->setDocument(result);
     }