Let synchronized painting generate correct paint invalidation rects

third_party/WebKit/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 993 matching lines @@
 
     m_layer->layer()->invalidateRect(rect);
     if (firstPaintInvalidationTrackingEnabled())
         m_debugInfo.appendAnnotatedInvalidateRect(rect, invalidationReason);
     if (isTrackingPaintInvalidations())
         trackPaintInvalidationRect(rect);
     for (size_t i = 0; i < m_linkHighlights.size(); ++i)
         m_linkHighlights[i]->invalidate();
 }
 
-void GraphicsLayer::invalidateDisplayItemClient(const DisplayItemClientWrapper& displayItemClient, PaintInvalidationReason paintInvalidationReason, const IntRect& previousPaintInvalidationRect, const IntRect& newPaintInvalidationRect)
+void GraphicsLayer::invalidateDisplayItemClient(const DisplayItemClientWrapper& displayItemClient, PaintInvalidationReason paintInvalidationReason, const IntRect* visualRect)
 {
-    paintController()->invalidate(displayItemClient, paintInvalidationReason, previousPaintInvalidationRect, newPaintInvalidationRect);
+    paintController()->invalidate(displayItemClient, paintInvalidationReason, visualRect);
     if (isTrackingPaintInvalidations())
         trackPaintInvalidationObject(displayItemClient.debugName());
 }
 
 void GraphicsLayer::setContentsRect(const IntRect& rect)
 {
     if (rect == m_contentsRect)
         return;
 
     m_contentsRect = rect;
@@ skipping 155 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