Convert Settings::rootLayerScrolls to RuntimeEnabledFeatures

third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/PaintInvalidationState.h"
 
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
 #include "core/layout/LayoutInline.h"
@@ skipping 278 matching lines @@
 void PaintInvalidationState::updateForNormalChildren()
 {
     if (!m_cachedOffsetsEnabled)
         return;
 
     if (!m_currentObject.isBox())
         return;
     const LayoutBox& box = toLayoutBox(m_currentObject);
 
     if (box.isLayoutView()) {
-        if (!box.document().settings() || !box.document().settings()->rootLayerScrolls()) {
+        if (!RuntimeEnabledFeatures::rootLayerScrollingEnabled()) {
             if (box != m_paintInvalidationContainer) {
                 m_paintOffset -= toLayoutView(box).frameView()->scrollOffset();
                 addClipRectRelativeToPaintOffset(toLayoutView(box).viewRect());
             }
             return;
         }
     } else if (box.isSVGRoot()) {
         const LayoutSVGRoot& svgRoot = toLayoutSVGRoot(box);
         if (svgRoot.shouldApplyViewportClip())
             addClipRectRelativeToPaintOffset(LayoutRect(LayoutPoint(), LayoutSize(svgRoot.pixelSnappedSize())));
@@ skipping 229 matching lines @@
 }
 
 
 void PaintInvalidatorContextAdapter::mapLocalRectToPaintInvalidationBacking(const LayoutObject& object, LayoutRect& rect) const
 {
     DCHECK(&object == &m_paintInvalidationState.currentObject());
     m_paintInvalidationState.mapLocalRectToPaintInvalidationBacking(rect);
 }
 
 } // namespace blink