Use DrawingRecorder::canUseCachedDrawing

Source/core/paint/InlinePainter.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/InlinePainter.h"
 
 #include "core/paint/BoxPainter.h"
 #include "core/paint/LineBoxListPainter.h"
 #include "core/paint/ObjectPainter.h"
@@ skipping 20 matching lines @@
     if (!styleToUse->hasOutline())
         return;
 
     LayoutRect bounds;
     if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
         // FIXME: Use tighter bounds.
         RenderBlock* cb = m_renderInline.containingBlock();
         bounds = cb->visualOverflowRect();
         bounds.moveBy(paintOffset);
     }
-    RenderDrawingRecorder recorder(paintInfo.context, &m_renderInline, paintInfo.phase, bounds);
+    RenderDrawingRecorder recorder(paintInfo.context, m_renderInline, paintInfo.phase, bounds);
+    if (recorder.canUseCachedDrawing())
+        return;
 
     if (styleToUse->outlineStyleIsAuto()) {
         if (RenderTheme::theme().shouldDrawDefaultFocusRing(&m_renderInline)) {
             // Only paint the focus ring by hand if the theme isn't able to draw the focus ring.
             ObjectPainter(m_renderInline).paintFocusRing(paintInfo, paintOffset, styleToUse);
         }
         return;
     }
 
     if (styleToUse->outlineStyle() == BNONE)
@@ skipping 136 matching lines @@
             pixelSnappedBox.maxX() + outlineWidth,
             pixelSnappedBox.maxY() + outlineWidth,
             BSBottom, outlineColor, outlineStyle,
             outlineWidth,
             outlineWidth,
             antialias);
     }
 }
 
 } // namespace blink