[Slimming Paint] Adjust the paint rect for paintOffset when painting column rules.

Source/core/paint/RenderDrawingRecorder.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/RenderDrawingRecorder.h"
 
 #include "core/layout/Layer.h"
 #include "core/layout/LayoutObject.h"
 #include "platform/RuntimeEnabledFeatures.h"
 
 namespace blink {
 
+RenderDrawingRecorder::RenderDrawingRecorder(GraphicsContext* context, const LayoutObject& renderer, DisplayItem::Type displayItemType, const LayoutRect& clip)
+    : RenderDrawingRecorder(context, renderer, displayItemType, pixelSnappedIntRect(clip))
+{ }
+
 RenderDrawingRecorder::RenderDrawingRecorder(GraphicsContext* context, const LayoutObject& renderer, PaintPhase phase, const FloatRect& clip)
     : m_drawingRecorder(context, renderer.displayItemClient(), DisplayItem::paintPhaseToDrawingType(phase), clip)
 #ifndef NDEBUG
     , m_renderer(renderer)
 #endif
 { }
 
 RenderDrawingRecorder::RenderDrawingRecorder(GraphicsContext* context, const LayoutObject& renderer, DisplayItem::Type displayItemType, const FloatRect& clip)
     : m_drawingRecorder(context, renderer.displayItemClient(), displayItemType, clip)
 #ifndef NDEBUG
     , m_renderer(renderer)
 #endif
 { }
 
 RenderDrawingRecorder::~RenderDrawingRecorder()
 {
     if (!RuntimeEnabledFeatures::slimmingPaintEnabled())
         return;
 
 #ifndef NDEBUG
     m_drawingRecorder.setClientDebugString(String::format("renderer: \"%p %s\"", &m_renderer, m_renderer.debugName().utf8().data()));
 #endif
 }
 
 } // namespace blink