Cleanup [RuntimeEnabled] use in Window

Source/core/frame/DOMWindow.cpp

Index: Source/core/frame/DOMWindow.cpp
diff --git a/Source/core/frame/DOMWindow.cpp b/Source/core/frame/DOMWindow.cpp
index d377609738e090fded0b5d85d33e32f4973e0457..d7f2be0512bd60093e97737d733ec4577870d4c1 100644
--- a/Source/core/frame/DOMWindow.cpp
+++ b/Source/core/frame/DOMWindow.cpp
@@ -1386,12 +1386,8 @@ static bool scrollBehaviorFromScrollOptions(const Dictionary& scrollOptions, Scr
     return false;
 }
 
-void DOMWindow::scrollBy(int x, int y, const Dictionary& scrollOptions, ExceptionState &exceptionState) const
+void DOMWindow::scrollBy(int x, int y) const
 {
-    ScrollBehavior scrollBehavior = ScrollBehaviorAuto;
-    if (RuntimeEnabledFeatures::cssomSmoothScrollEnabled() && !scrollBehaviorFromScrollOptions(scrollOptions, scrollBehavior, exceptionState))
-        return;
-
     if (!isCurrentlyDisplayedInFrame())
         return;
 
@@ -1406,12 +1402,16 @@ void DOMWindow::scrollBy(int x, int y, const Dictionary& scrollOptions, Exceptio
     view->scrollBy(scaledOffset);
 }
 
-void DOMWindow::scrollTo(int x, int y, const Dictionary& scrollOptions, ExceptionState& exceptionState) const
+void DOMWindow::scrollBy(int x, int y, const Dictionary& scrollOptions, ExceptionState &exceptionState) const
 {
     ScrollBehavior scrollBehavior = ScrollBehaviorAuto;
-    if (RuntimeEnabledFeatures::cssomSmoothScrollEnabled() && !scrollBehaviorFromScrollOptions(scrollOptions, scrollBehavior, exceptionState))
+    if (!scrollBehaviorFromScrollOptions(scrollOptions, scrollBehavior, exceptionState))
         return;
+    scrollBy(x, y);
+}
 
+void DOMWindow::scrollTo(int x, int y) const
+{
     if (!isCurrentlyDisplayedInFrame())
         return;
 
@@ -1426,6 +1426,14 @@ void DOMWindow::scrollTo(int x, int y, const Dictionary& scrollOptions, Exceptio
     view->setScrollPosition(layoutPos);
 }
 
+void DOMWindow::scrollTo(int x, int y, const Dictionary& scrollOptions, ExceptionState& exceptionState) const
+{
+    ScrollBehavior scrollBehavior = ScrollBehaviorAuto;
+    if (!scrollBehaviorFromScrollOptions(scrollOptions, scrollBehavior, exceptionState))
+        return;
+    scrollTo(x, y);
+}
+
 void DOMWindow::moveBy(float x, float y) const
 {
     if (!m_frame || !m_frame->isMainFrame())