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

Source/core/loader/FrameLoaderClient.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 114 matching lines @@
     // The indicated security origin has run active content (such as a
     // script) from an insecure source.  Note that the insecure content can
     // spread to other frames in the same origin.
     virtual void didRunInsecureContent(SecurityOrigin*, const KURL&) = 0;
     virtual void didDetectXSS(const KURL&, bool didBlockEntirePage) = 0;
     virtual void didDispatchPingLoader(const KURL&) = 0;
 
     // Will be called when |PerformanceTiming| events are updated
     virtual void didChangePerformanceTiming() { }
 
+    virtual void didChangeScrollingMode(Frame*, ScrollbarMode) {}
+    virtual void didChangeMarginWidth(Frame*, int) {}
+    virtual void didChangeMarginHeight(Frame*, int) {}

[alexmos, 2015/09/02 21:37:05]

Nit: how about grouping these with didChangeName and didChangeSandboxFlags
below?

[lazyboy, 2015/09/15 01:40:33]

Done.

+
     // Transmits the change in the set of watched CSS selectors property
     // that match any element on the frame.
     virtual void selectorMatchChanged(const Vector<String>& addedSelectors, const Vector<String>& removedSelectors) = 0;
 
     virtual PassRefPtrWillBeRawPtr<DocumentLoader> createDocumentLoader(LocalFrame*, const ResourceRequest&, const SubstituteData&) = 0;
 
     virtual String userAgent(const KURL&) = 0;
 
     virtual String doNotTrackValue() = 0;
 
@@ skipping 92 matching lines @@
         BeforeUnloadHandler,
         UnloadHandler,
     };
     virtual void suddenTerminationDisablerChanged(bool present, SuddenTerminationDisablerType) { }
 
 };
 
 } // namespace blink
 
 #endif // FrameLoaderClient_h