[No submit][SPInvalidation] Track paint offset change

third_party/WebKit/Source/core/paint/PartPainter.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/paint/PartPainter.h"
 
 #include "core/layout/LayoutPart.h"
 #include "core/paint/BoxPainter.h"
 #include "core/paint/LayoutObjectDrawingRecorder.h"
 #include "core/paint/ObjectPainter.h"
@@ skipping 26 matching lines @@
     return selectionEnd == end;
   if (s == SelectionBoth)
     return selectionStart == 0 && selectionEnd == end;
 
   DCHECK(0);
   return false;
 }
 
 void PartPainter::paint(const PaintInfo& paintInfo,
                         const LayoutPoint& paintOffset) {
+  ObjectPainter(m_layoutPart).checkPaintOffset(paintInfo, paintOffset);
   LayoutPoint adjustedPaintOffset = paintOffset + m_layoutPart.location();
+
   if (!ReplacedPainter(m_layoutPart)
            .shouldPaint(paintInfo, adjustedPaintOffset))
     return;
 
   LayoutRect borderRect(adjustedPaintOffset, m_layoutPart.size());
 
   if (m_layoutPart.hasBoxDecorationBackground() &&
       (paintInfo.phase == PaintPhaseForeground ||
        paintInfo.phase == PaintPhaseSelection))
     BoxPainter(m_layoutPart)
@@ skipping 72 matching lines @@
   IntSize widgetPaintOffset = paintLocation - widget->frameRect().location();
   TransformRecorder transform(
       paintInfo.context, m_layoutPart,
       AffineTransform::translation(widgetPaintOffset.width(),
                                    widgetPaintOffset.height()));
   CullRect adjustedCullRect(paintInfo.cullRect(), -widgetPaintOffset);
   widget->paint(paintInfo.context, adjustedCullRect);
 }
 
 }  // namespace blink