Replace adjustment of previous visual rects on scroll with normal paint invalidation

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/)
@@ skipping 1241 matching lines @@
   }
 }
 
 LayoutRect LayoutObject::previousVisualRectIncludingCompositedScrolling(
     const LayoutBoxModelObject& paintInvalidationContainer) const {
   LayoutRect rect = previousVisualRect();
   adjustVisualRectForCompositedScrolling(rect, paintInvalidationContainer);
   return rect;
 }
 
-void LayoutObject::adjustPreviousPaintInvalidationForScrollIfNeeded(
-    const DoubleSize& scrollDelta) {
-  if (containerForPaintInvalidation().usesCompositedScrolling())
-    return;
-  m_previousVisualRect.move(LayoutSize(scrollDelta));
-}
-
 void LayoutObject::clearPreviousVisualRects() {
   setPreviousVisualRect(LayoutRect());
   ObjectPaintInvalidator(*this).setPreviousLocationInBacking(LayoutPoint());
   // Ensure check paint invalidation of subtree that would be triggered by
   // location change if we had valid previous location.
   setMayNeedPaintInvalidationSubtree();
   // After clearing ("invalidating") the visual rects, mark this object as
   // needing to re-compute them.
   setShouldDoFullPaintInvalidation();
 }
@@ skipping 2240 matching lines @@
     const blink::LayoutObject* root = object1;
     while (root->parent())
       root = root->parent();
     root->showLayoutTreeAndMark(object1, "*", object2, "-", 0);
   } else {
     WTFLogAlways("%s", "Cannot showLayoutTree. Root is (nil)");
   }
 }
 
 #endif