Change Widget subclasses to use a CullRect instead of an IntRect for painting.

third_party/WebKit/Source/core/paint/PaintInfo.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 "config.h"
 #include "core/paint/PaintInfo.h"
 
 namespace blink {
 
 void PaintInfo::updatePaintingRootForChildren(const LayoutObject* layoutObject)
 {
     if (!paintingRoot)
         return;
 
     // If we're the painting root, kids draw normally, and see root of nullptr.
     if (paintingRoot == layoutObject) {
         paintingRoot = nullptr;
         return;
     }
 }
 
 bool PaintInfo::shouldPaintWithinRoot(const LayoutObject* layoutObject) const
 {
     return !paintingRoot || paintingRoot == layoutObject;
 }
 
-CullRect::CullRect(const CullRect& cullRect, const IntPoint& offset)
-{
-    m_rect = cullRect.m_rect;
-    m_rect.moveBy(offset);
-}
-
-bool CullRect::intersectsCullRect(const IntRect& boundingBox) const
-{
-    return boundingBox.intersects(m_rect);
-}
-
-bool CullRect::intersectsCullRect(const AffineTransform& transform, const FloatRect& boundingBox) const
-{
-    return transform.mapRect(boundingBox).intersects(m_rect);
-}
-
-bool CullRect::intersectsCullRect(const LayoutRect& rectArg) const
-{
-    return m_rect.intersects(enclosingIntRect(rectArg));
-}
-
-bool CullRect::intersectsHorizontalRange(LayoutUnit lo, LayoutUnit hi) const
-{
-    return !(lo >= m_rect.maxX() || hi <= m_rect.x());
-}
-
-bool CullRect::intersectsVerticalRange(LayoutUnit lo, LayoutUnit hi) const
-{
-    return !(lo >= m_rect.maxY() || hi <= m_rect.y());
-}
-
 void PaintInfo::updateCullRect(const AffineTransform& localToParentTransform)
 {
     m_cullRect.updateCullRect(localToParentTransform);
 }
 
-void CullRect::updateCullRect(const AffineTransform& localToParentTransform)
-{
-    if (m_rect != LayoutRect::infiniteIntRect())
-        m_rect = localToParentTransform.inverse().mapRect(m_rect);
-}
-
 } // namespace blink