Refactoring: Extract DocumentInit for capture Document construction parameter.

Source/core/svg/SVGDocument.cpp

Index: Source/core/svg/SVGDocument.cpp
diff --git a/Source/core/svg/SVGDocument.cpp b/Source/core/svg/SVGDocument.cpp
index 17e522b461143d47b3f7ad7d97f8ce9c8033b2c0..70204494b713d08a0188230a9f46d4c7e996e886 100644
--- a/Source/core/svg/SVGDocument.cpp
+++ b/Source/core/svg/SVGDocument.cpp
@@ -35,8 +35,8 @@
 
 namespace WebCore {
 
-SVGDocument::SVGDocument(Frame* frame, const KURL& url)
-    : Document(frame, url, SVGDocumentClass)
+SVGDocument::SVGDocument(const DocumentInitializer& initializer)
+    : Document(initializer, SVGDocumentClass)
 {
     ScriptWrappable::init(this);
 }