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

public/web/WebFrame.h

Index: public/web/WebFrame.h
diff --git a/public/web/WebFrame.h b/public/web/WebFrame.h
index ee3a1b42d12eff522d8215da2f6f4b6c8d6d71c3..115302fc812218076540ae7adf6216d7d46c3d85 100644
--- a/public/web/WebFrame.h
+++ b/public/web/WebFrame.h
@@ -42,6 +42,7 @@
 #include "public/platform/WebReferrerPolicy.h"
 #include "public/platform/WebURL.h"
 #include "public/platform/WebURLRequest.h"
+#include "public/web/WebFrameOwnerProperties.h"
 #include "public/web/WebTreeScopeType.h"
 
 struct NPObject;
@@ -173,6 +174,12 @@ public:
     // navigation.
     BLINK_EXPORT void setFrameOwnerSandboxFlags(WebSandboxFlags);
 
+    // Updates the scrolling and margin properties in the frame's FrameOwner.
+    // This is used when this frame's parent is in another process and it
+    // dynamically updates these properties.  The flags won't take effect until
+    // the next navigation.
+    BLINK_EXPORT void setFrameOwnerProperties(const WebFrameOwnerProperties&);
+
     // Geometry -----------------------------------------------------------
 
     // NOTE: These routines do not force page layout so their results may