Invalidate background-attachment:fixed on scroll.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2476 matching lines @@
             toImageContentData(m_style->contentData())->image()->removeClient(this);
 
         if (m_style->boxReflect() && m_style->boxReflect()->mask().image())
             m_style->boxReflect()->mask().image()->removeClient(this);
 
         removeShapeImageClient(m_style->shapeOutside());
     }
     ResourceLoadPriorityOptimizer::resourceLoadPriorityOptimizer()->removeLayoutObject(this);
 
     if (frameView())
-        setIsSlowRepaintObject(false);
+        setIsBackgroundAttachmentFixedObject(false);
 }
 
 void LayoutObject::insertedIntoTree()
 {
     // FIXME: We should ASSERT(isRooted()) here but generated content makes some out-of-order insertion.
 
     // Keep our layer hierarchy updated. Optimize for the common case where we don't have any children
     // and don't have a layer attached to ourselves.
     PaintLayer* layer = nullptr;
     if (slowFirstChild() || hasLayer()) {
@@ skipping 881 matching lines @@
 
 void LayoutObject::invalidatePaintIncludingNonSelfPaintingLayerDescendants(const LayoutBoxModelObject& paintInvalidationContainer)
 {
     invalidatePaintOfPreviousPaintInvalidationRect(paintInvalidationContainer, PaintInvalidationLayer);
     for (LayoutObject* child = slowFirstChild(); child; child = child->nextSibling()) {
         if (!child->hasLayer() || !toLayoutBoxModelObject(child)->layer()->isSelfPaintingLayer())
             child->invalidatePaintIncludingNonSelfPaintingLayerDescendants(paintInvalidationContainer);
     }
 }
 
-void LayoutObject::setIsSlowRepaintObject(bool isSlowRepaintObject)
+void LayoutObject::setIsBackgroundAttachmentFixedObject(bool isBackgroundAttachmentFixedObject)
 {
     ASSERT(frameView());
-    if (m_bitfields.isSlowRepaintObject() == isSlowRepaintObject)
+    if (m_bitfields.isBackgroundAttachmentFixedObject() == isBackgroundAttachmentFixedObject)
         return;
-    m_bitfields.setIsSlowRepaintObject(isSlowRepaintObject);
-    if (isSlowRepaintObject)
-        frameView()->addSlowRepaintObject();
+    m_bitfields.setIsBackgroundAttachmentFixedObject(isBackgroundAttachmentFixedObject);
+    if (isBackgroundAttachmentFixedObject)
+        frameView()->addBackgroundAttachmentFixedObject(this);
     else
-        frameView()->removeSlowRepaintObject();
+        frameView()->removeBackgroundAttachmentFixedObject(this);
 }
 
 } // namespace blink
 
 #ifndef NDEBUG
 
 void showTree(const blink::LayoutObject* object)
 {
     if (object)
         object->showTreeForThis();
@@ skipping 20 matching lines @@
         const blink::LayoutObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showLayoutTreeAndMark(object1, "*", object2, "-", 0);
     } else {
         fprintf(stderr, "Cannot showLayoutTree. Root is (nil)\n");
     }
 }
 
 #endif