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

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 98042f6431e1ae83107a2ba1ef6af0f1cef8498a..f3c00c600bdd3b5160b7e4e84c5afe46633664d4 100644
--- a/third_party/WebKit/Source/web/WebFrame.cpp
+++ b/third_party/WebKit/Source/web/WebFrame.cpp
@@ -16,6 +16,7 @@
 #include "platform/UserGestureIndicator.h"
 #include "platform/heap/Handle.h"
 #include "public/web/WebElement.h"
+#include "public/web/WebFrameOwnerProperties.h"
 #include "public/web/WebSandboxFlags.h"
 #include "web/OpenedFrameTracker.h"
 #include "web/RemoteBridgeFrameOwner.h"
@@ -136,6 +137,18 @@ void WebFrame::setFrameOwnerSandboxFlags(WebSandboxFlags flags)
     toRemoteBridgeFrameOwner(owner)->setSandboxFlags(static_cast<SandboxFlags>(flags));
 }
 
+void WebFrame::setFrameOwnerProperties(const WebFrameOwnerProperties& frameOwnerProperties)
+{
+    // At the moment, this is only used to replicate frame owner properties
+    // for frames with a remote owner.
+    FrameOwner* owner = toCoreFrame(this)->owner();
+    ASSERT(owner);
+    toRemoteBridgeFrameOwner(owner)->setScrollingMode(static_cast<ScrollbarMode>(frameOwnerProperties.scrollingMode));

[dcheng, 2015/10/12 04:50:01]

Since all callsites seem to pass in a WebFrameOwnerProperties::ScrollbarMode,
I'd probably just change the argument type and static_cast<> inside the setter.

[lazyboy, 2015/10/13 21:59:08]

Done.

+
+    toRemoteBridgeFrameOwner(owner)->setMarginWidth(frameOwnerProperties.marginWidth);
+    toRemoteBridgeFrameOwner(owner)->setMarginHeight(frameOwnerProperties.marginHeight);
+}
+
 WebFrame* WebFrame::opener() const
 {
     return m_opener;