Seperate visualviewportchanged event into scroll and resize events

third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp

Index: third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp
diff --git a/third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp b/third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp
index f92bf080538be105d51cfe274623ca9dcffa07e5..ab1225dbc0b15334299f4ff542f3b7a105b445ed 100644
--- a/third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp
+++ b/third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp
@@ -44,6 +44,16 @@ DEFINE_TRACE(DOMVisualViewport)
     visitor->trace(m_window);
 }
 
+const AtomicString& DOMVisualViewport::interfaceName() const
+{
+    return EventTargetNames::DOMVisualViewport;
+}
+
+ExecutionContext* DOMVisualViewport::getExecutionContext() const
+{
+    return m_window->getExecutionContext();
+}
+
 double DOMVisualViewport::scrollLeft()
 {
     LocalFrame* frame = m_window->frame();