Enabled using viewport on desktop browsers behind experimental flag

Source/web/WebSettingsImpl.cpp

Index: Source/web/WebSettingsImpl.cpp
diff --git a/Source/web/WebSettingsImpl.cpp b/Source/web/WebSettingsImpl.cpp
index 3f6baeea3b619fc031b8c02f2e12ad6d4b9d89cb..cd08b3b69149cecf417b7aeea951b4dfa9fc7126 100644
--- a/Source/web/WebSettingsImpl.cpp
+++ b/Source/web/WebSettingsImpl.cpp
@@ -58,6 +58,7 @@ WebSettingsImpl::WebSettingsImpl(Settings* settings)
     , m_doubleTapToZoomEnabled(false)
     , m_supportDeprecatedTargetDensityDPI(false)
     , m_pinchOverlayScrollbarThickness(0)
+    , m_anchorScrollPositionOnResize(false)
 {
     ASSERT(settings);
 }
@@ -681,4 +682,14 @@ void WebSettingsImpl::setPinchVirtualViewportEnabled(bool enabled)
     m_settings->setPinchVirtualViewportEnabled(enabled);
 }
 
+bool WebSettingsImpl::anchorScrollPositionOnResize() const
+{
+    return m_anchorScrollPositionOnResize;
+}
+
+void WebSettingsImpl::setAnchorScrollPositionOnResize(bool enabled)
+{
+    m_anchorScrollPositionOnResize = enabled;
+}
+
 } // namespace WebKit