Refactor DrawingRecorders to check for cached drawings earlier

Source/platform/graphics/GraphicsLayer.cpp

 /*
  * Copyright (C) 2009 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 270 matching lines @@
 {
     if (!m_client)
         return;
     if (firstPaintInvalidationTrackingEnabled())
         m_debugInfo.clearAnnotatedInvalidateRects();
     incrementPaintCount();
 #ifndef NDEBUG
     if (m_displayItemList && contentsOpaque()) {
         ASSERT(RuntimeEnabledFeatures::slimmingPaintEnabled());
         FloatRect rect(FloatPoint(), size());
-        DrawingRecorder recorder(context, *this, DisplayItem::DebugRedFill, rect);
-        if (!recorder.canUseCachedDrawing())
+        if (!DrawingRecorder::useCachedDrawingIfPossible(context, *this, DisplayItem::DebugRedFill)) {
+            DrawingRecorder recorder(context, *this, DisplayItem::DebugRedFill, rect);
             context.fillRect(rect, SK_ColorRED);
+        }
     }
 #endif
     m_client->paintContents(this, context, m_paintingPhase, clip);
 }
 
 void GraphicsLayer::updateChildList()
 {
     WebLayer* childHost = m_layer->layer();
     childHost->removeAllChildren();
 
@@ skipping 870 matching lines @@
 {
     if (!layer) {
         fprintf(stderr, "Cannot showGraphicsLayerTree for (nil).\n");
         return;
     }
 
     String output = layer->layerTreeAsText(blink::LayerTreeIncludesDebugInfo);
     fprintf(stderr, "%s\n", output.utf8().data());
 }
 #endif