Create a GraphicsContext from a DisplayList.

Source/web/LinkHighlight.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 218 matching lines @@
         } else
             addQuadToPath(transformedQuad, newPath);
     }
 
     FloatRect boundingRect = newPath.boundingRect();
     newPath.translate(-toFloatSize(boundingRect.location()));
 
     bool pathHasChanged = !(newPath == m_path);
     if (pathHasChanged) {
         m_path = newPath;
+
+        GraphicsContext gc(boundingRect);
+        gc.setFillColor(m_node->renderer()->style()->tapHighlightColor());
+        gc.fillPath(m_path);
+        m_displayList = gc.endRecording();
+
         m_contentLayer->layer()->setBounds(enclosingIntRect(boundingRect).size());
     }
 
     m_contentLayer->layer()->setPosition(boundingRect.location());
 
     return pathHasChanged;
 }
 
 void LinkHighlight::paintContents(WebCanvas* canvas, const WebRect& webClipRect, bool, WebFloatRect&,
     WebContentLayerClient::GraphicsContextStatus contextStatus)
 {
     if (!m_node || !m_node->renderer())
         return;
 
     GraphicsContext gc(canvas,
         contextStatus == WebContentLayerClient::GraphicsContextEnabled ? GraphicsContext::NothingDisabled : GraphicsContext::FullyDisabled);
     IntRect clipRect(IntPoint(webClipRect.x, webClipRect.y), IntSize(webClipRect.width, webClipRect.height));
-    gc.clip(clipRect);
-    gc.setFillColor(m_node->renderer()->style()->tapHighlightColor());
-    gc.fillPath(m_path);
+    m_displayList->setClip(clipRect);
+    gc.drawDisplayList(m_displayList.get());
 }
 
 void LinkHighlight::startHighlightAnimationIfNeeded()
 {
     if (m_isAnimating)
         return;
 
     m_isAnimating = true;
     const float startOpacity = 1;
     // FIXME: Should duration be configurable?
@@ skipping 77 matching lines @@
     // Make sure we update geometry on the next callback from WebViewImpl::layout().
     m_geometryNeedsUpdate = true;
 }
 
 WebLayer* LinkHighlight::layer()
 {
     return clipLayer();
 }
 
 } // namespace blink