Propagate scrolling/marginwidth/marginheight property values to child frame.

third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp

Index: third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp b/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
index 21bf0347941961f069e7ad92e0b260f92edd38b1..f759d64c16db09e33474834105355075a067529e 100644
--- a/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
+++ b/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
@@ -41,6 +41,7 @@
 #include "core/events/UIEventWithKeyState.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
+#include "core/html/HTMLFrameElementBase.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/HTMLPlugInElement.h"
 #include "core/input/EventHandler.h"
@@ -872,6 +873,14 @@ void FrameLoaderClientImpl::didChangeSandboxFlags(Frame* childFrame, SandboxFlag
     m_webFrame->client()->didChangeSandboxFlags(WebFrame::fromFrame(childFrame), static_cast<WebSandboxFlags>(flags));
 }
 
+void FrameLoaderClientImpl::didChangeFrameOwnerProperties(HTMLFrameElementBase* frameElement)
+{
+    if (!m_webFrame->client())
+        return;
+
+    m_webFrame->client()->didChangeFrameOwnerProperties(WebFrame::fromFrame(frameElement->contentFrame()), WebFrameOwnerProperties(frameElement->scrollingMode(), frameElement->marginWidth(), frameElement->marginHeight()));
+}
+
 void FrameLoaderClientImpl::dispatchWillOpenWebSocket(WebSocketHandle* handle)
 {
     m_webFrame->client()->willOpenWebSocket(handle);