Improvement handling of background and outline paint phases

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/PaintInfo.h"
@@ skipping 37 matching lines @@
     LayoutRect borderRect(adjustedPaintOffset, m_layoutPart.size());
 
     if (m_layoutPart.hasBoxDecorationBackground() && (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection))
         BoxPainter(m_layoutPart).paintBoxDecorationBackground(paintInfo, adjustedPaintOffset);
 
     if (paintInfo.phase == PaintPhaseMask) {
         BoxPainter(m_layoutPart).paintMask(paintInfo, adjustedPaintOffset);
         return;
     }
 
-    if ((paintInfo.phase == PaintPhaseOutline || paintInfo.phase == PaintPhaseSelfOutline) && m_layoutPart.style()->hasOutline())
+    if (shouldPaintSelfOutline(paintInfo.phase))
         ObjectPainter(m_layoutPart).paintOutline(paintInfo, adjustedPaintOffset);
 
     if (paintInfo.phase != PaintPhaseForeground)
         return;
 
     {
         Optional<RoundedInnerRectClipper> clipper;
         if (m_layoutPart.style()->hasBorderRadius()) {
             if (borderRect.isEmpty())
                 return;
@@ skipping 42 matching lines @@
     // When painting widgets into compositing layers, tx and ty are relative to the enclosing compositing layer,
     // not the root. In this case, shift the CTM and adjust the CullRect to be root-relative to fix plugin drawing.
     TransformRecorder transform(paintInfo.context, m_layoutPart,
         AffineTransform::translation(widgetPaintOffset.width(), widgetPaintOffset.height()));
 
     CullRect adjustedCullRect(paintInfo.cullRect(), -widgetPaintOffset);
     widget->paint(paintInfo.context, adjustedCullRect);
 }
 
 } // namespace blink