(blink) Propagate scrolling/marginwidth/marginheight property values to child frame.

Source/core/html/HTMLFrameElementBase.h

Index: Source/core/html/HTMLFrameElementBase.h
diff --git a/Source/core/html/HTMLFrameElementBase.h b/Source/core/html/HTMLFrameElementBase.h
index cac0f27c2cc58ae0125b5c3ed18f129fad98c2c1..0f3e1b6d82c2222d54a02bd2840df217ce26044d 100644
--- a/Source/core/html/HTMLFrameElementBase.h
+++ b/Source/core/html/HTMLFrameElementBase.h
@@ -25,17 +25,11 @@
 #define HTMLFrameElementBase_h
 
 #include "core/html/HTMLFrameOwnerElement.h"
-#include "platform/scroll/ScrollTypes.h"
 
 namespace blink {
 
 class HTMLFrameElementBase : public HTMLFrameOwnerElement {
 public:
-    ScrollbarMode scrollingMode() const final { return m_scrolling; }
-
-    int marginWidth() const { return m_marginWidth; }
-    int marginHeight() const { return m_marginHeight; }
-
     bool canContainRangeEndPoint() const final { return false; }
 
 protected:
@@ -68,11 +62,6 @@ private:
 
     AtomicString m_URL;
     AtomicString m_frameName;
-
-    ScrollbarMode m_scrolling;
-
-    int m_marginWidth;
-    int m_marginHeight;
 };
 
 inline bool isHTMLFrameElementBase(const HTMLElement& element)