Support script modify iframe scrolling, marginWidth and marginHeight attr

third_party/WebKit/Source/web/WebFrame.cpp

Index: third_party/WebKit/Source/web/WebFrame.cpp
diff --git a/third_party/WebKit/Source/web/WebFrame.cpp b/third_party/WebKit/Source/web/WebFrame.cpp
index 79ce1ac6b9979b00595c6cfcf32f373238e62f1c..7d20d611c090bd74ce0447ebe915433de133d9d9 100644
--- a/third_party/WebKit/Source/web/WebFrame.cpp
+++ b/third_party/WebKit/Source/web/WebFrame.cpp
@@ -5,6 +5,7 @@
 #include "public/web/WebFrame.h"
 
 #include "bindings/core/v8/WindowProxyManager.h"
+#include "core/HTMLNames.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
@@ -25,6 +26,8 @@
 
 namespace blink {
 
+using namespace HTMLNames;
+
 bool WebFrame::swap(WebFrame* frame) {
   using std::swap;
   Frame* oldFrame = toImplBase()->frame();
@@ -138,6 +141,19 @@ void WebFrame::setFrameOwnerProperties(
   // for frames with a remote owner.
   RemoteFrameOwner* owner = toRemoteFrameOwner(toImplBase()->frame()->owner());
   DCHECK(owner);
+
+  Frame* frame = toImplBase()->frame();
+  DCHECK(frame);
+
+  if (frame->isLocalFrame()) {
+    LocalFrame* localFrame = toLocalFrame(frame);
+    if (localFrame->document()) {

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

I don't think you need this null check.

+      localFrame->document()->willChangeFrameOwnerProperties(
+          properties.marginWidth, properties.marginHeight,
+          static_cast<ScrollbarMode>(properties.scrollingMode));
+    }
+  }
+
   owner->setScrollingMode(properties.scrollingMode);
   owner->setMarginWidth(properties.marginWidth);
   owner->setMarginHeight(properties.marginHeight);