Make cc/paint have concrete types

third_party/WebKit/Source/core/layout/compositing/PaintLayerCompositor.cpp

 /*
  * Copyright (C) 2009, 2010 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 927 matching lines @@
     FramePainter(*m_layoutView.frameView())
         .paintScrollCorner(builder.context(), interestRect);
   }
 
   // Replay the painted scrollbar content with the GraphicsLayer backing as the
   // DisplayItemClient in order for the resulting DrawingDisplayItem to produce
   // the correct visualRect (i.e., the bounds of the involved GraphicsLayer).
   DrawingRecorder drawingRecorder(context, *graphicsLayer,
                                   DisplayItem::kScrollbarCompositedScrollbar,
                                   layerBounds);
-  builder.endRecording()->playback(context.canvas());
+  context.canvas()->drawPicture(builder.endRecording());
 }
 
 Scrollbar* PaintLayerCompositor::graphicsLayerToScrollbar(
     const GraphicsLayer* graphicsLayer) const {
   if (graphicsLayer == layerForHorizontalScrollbar()) {
     return m_layoutView.frameView()->horizontalScrollbar();
   }
   if (graphicsLayer == layerForVerticalScrollbar()) {
     return m_layoutView.frameView()->verticalScrollbar();
   }
@@ skipping 397 matching lines @@
   } else if (graphicsLayer == m_scrollLayer.get()) {
     name = "Frame Scrolling Layer";
   } else {
     ASSERT_NOT_REACHED();
   }
 
   return name;
 }
 
 }  // namespace blink