Enabled using viewport on desktop browsers behind experimental flag

Source/core/platform/ScrollView.cpp

Index: Source/core/platform/ScrollView.cpp
diff --git a/Source/core/platform/ScrollView.cpp b/Source/core/platform/ScrollView.cpp
index 65c585ee0cd483d843a91e69e366cb80c216e925..7e6be5d7ccc321e7e665f83d814f87ed11a353a9 100644
--- a/Source/core/platform/ScrollView.cpp
+++ b/Source/core/platform/ScrollView.cpp
@@ -212,36 +212,7 @@ IntRect ScrollView::visibleContentRect(VisibleContentRectIncludesScrollbars scol
 
 IntSize ScrollView::layoutSize(VisibleContentRectIncludesScrollbars scrollbarInclusion) const
 {
-    return m_fixedLayoutSize.isEmpty() || !m_useFixedLayout ? unscaledVisibleContentSize(scrollbarInclusion) : m_fixedLayoutSize;
-}
-
-IntSize ScrollView::fixedLayoutSize() const
-{
-    return m_fixedLayoutSize;
-}
-
-void ScrollView::setFixedLayoutSize(const IntSize& newSize)
-{
-    if (fixedLayoutSize() == newSize)
-        return;
-    m_fixedLayoutSize = newSize;
-    updateScrollbars(scrollOffset());
-    if (m_useFixedLayout)
-        contentsResized();
-}
-
-bool ScrollView::useFixedLayout() const
-{
-    return m_useFixedLayout;
-}
-
-void ScrollView::setUseFixedLayout(bool enable)
-{
-    if (useFixedLayout() == enable)
-        return;
-    m_useFixedLayout = enable;
-    updateScrollbars(scrollOffset());
-    contentsResized();
+    return unscaledVisibleContentSize(scrollbarInclusion);
 }
 
 IntSize ScrollView::contentsSize() const