Replace OwnPtr with WTF::Optional for optional recorders.

Source/core/paint/ReplacedPainter.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/ReplacedPainter.h"
 
 #include "core/layout/LayoutReplaced.h"
 #include "core/paint/BoxPainter.h"
 #include "core/paint/DeprecatedPaintLayer.h"
 #include "core/paint/LayoutObjectDrawingRecorder.h"
 #include "core/paint/ObjectPainter.h"
 #include "core/paint/PaintInfo.h"
 #include "core/paint/RoundedInnerRectClipper.h"
+#include "wtf/Optional.h"
 
 namespace blink {
 
 void ReplacedPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     if (!m_layoutReplaced.shouldPaint(paintInfo, paintOffset))
         return;
 
     LayoutPoint adjustedPaintOffset = paintOffset + m_layoutReplaced.location();
     LayoutRect paintRect(adjustedPaintOffset, m_layoutReplaced.size());
@@ skipping 24 matching lines @@
         return;
 
     if (!paintInfo.shouldPaintWithinRoot(&m_layoutReplaced))
         return;
 
     if (paintInfo.phase == PaintPhaseSelection)
         if (m_layoutReplaced.selectionState() == LayoutObject::SelectionNone)
             return;
 
     {
-        OwnPtr<RoundedInnerRectClipper> clipper;
+        Optional<RoundedInnerRectClipper> clipper;
         bool completelyClippedOut = false;
         if (m_layoutReplaced.style()->hasBorderRadius()) {
             LayoutRect borderRect = LayoutRect(adjustedPaintOffset, m_layoutReplaced.size());
 
             if (borderRect.isEmpty()) {
                 completelyClippedOut = true;
             } else {
                 // Push a clip if we have a border radius, since we want to round the foreground content that gets painted.
                 FloatRoundedRect roundedInnerRect = m_layoutReplaced.style()->getRoundedInnerBorderFor(paintRect,
                     LayoutRectOutsets(
                         -(m_layoutReplaced.paddingTop() + m_layoutReplaced.borderTop()),
                         -(m_layoutReplaced.paddingRight() + m_layoutReplaced.borderRight()),
                         -(m_layoutReplaced.paddingBottom() + m_layoutReplaced.borderBottom()),
                         -(m_layoutReplaced.paddingLeft() + m_layoutReplaced.borderLeft())),
                     true, true);
 
-                clipper = adoptPtr(new RoundedInnerRectClipper(m_layoutReplaced, paintInfo, paintRect, roundedInnerRect, ApplyToDisplayListIfEnabled));
+                clipper.emplace(m_layoutReplaced, paintInfo, paintRect, roundedInnerRect, ApplyToDisplayListIfEnabled);
             }
         }
 
         if (!completelyClippedOut) {
             if (paintInfo.phase == PaintPhaseClippingMask) {
                 BoxPainter(m_layoutReplaced).paintClippingMask(paintInfo, adjustedPaintOffset);
             } else {
                 m_layoutReplaced.paintReplaced(paintInfo, adjustedPaintOffset);
             }
         }
     }
 
     // The selection tint never gets clipped by border-radius rounding, since we want it to run right up to the edges of
     // surrounding content.
     bool drawSelectionTint = paintInfo.phase == PaintPhaseForeground && m_layoutReplaced.selectionState() != LayoutObject::SelectionNone && !m_layoutReplaced.document().printing();
     if (drawSelectionTint) {
         LayoutRect selectionPaintingRect = m_layoutReplaced.localSelectionRect();
         selectionPaintingRect.moveBy(adjustedPaintOffset);
         IntRect selectionPaintingIntRect = pixelSnappedIntRect(selectionPaintingRect);
 
         LayoutObjectDrawingRecorder drawingRecorder(*paintInfo.context, m_layoutReplaced, DisplayItem::SelectionTint, selectionPaintingIntRect);
         if (drawingRecorder.canUseCachedDrawing())
             return;
         paintInfo.context->fillRect(selectionPaintingIntRect, m_layoutReplaced.selectionBackgroundColor());
     }
 }
 
 } // namespace blink