Support script modify iframe scrolling, marginWidth and marginHeight attr

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index 4ea28a71e472ac90b904ef538954f21f0d609eca..31243c4498b0c5791804ef5472ae257786725327 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -4310,6 +4310,19 @@ HTMLFrameOwnerElement* Document::localOwner() const {
   return frame()->deprecatedLocalOwner();
 }
 
+void Document::didChangeFrameOwnerProperties(int marginWidth,
+                                             int marginHeight,
+                                             ScrollbarMode scrollingMode) {
+  DCHECK(localOwner());

[bokan, 2016/11/21 16:11:36]

The owner can be remote. You need some way to get the FrameOwner regardless if
its RemoteFrameOwner or HTMLFrameOwnerElement. OOPIF reviewer might be able to
help with the right way to do this.

[alexmos, 2016/11/21 17:56:56]

Just using frame()->owner() instead should work here.

+
+  if (marginWidth != localOwner()->marginWidth())
+    body()->setIntegralAttribute(marginwidthAttr, marginWidth);
+  if (marginHeight != localOwner()->marginHeight())
+    body()->setIntegralAttribute(marginheightAttr, marginHeight);
+  if (scrollingMode != localOwner()->scrollingMode())
+    view()->setNeedsLayout();
+}
+
 bool Document::isInInvisibleSubframe() const {
   if (!localOwner())
     return false;  // this is a local root element