Subtree caching implementation in blink-core

Source/core/layout/compositing/CompositedDeprecatedPaintLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 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 2202 matching lines @@
     } else if (graphicsLayer == layerForScrollCorner()) {
         IntPoint scrollCornerAndResizerLocation = m_owningLayer.scrollableArea()->scrollCornerAndResizerRect().location();
         ScrollableAreaPainter(*m_owningLayer.scrollableArea()).paintScrollCorner(&context, -scrollCornerAndResizerLocation, clip);
         ScrollableAreaPainter(*m_owningLayer.scrollableArea()).paintResizer(&context, -scrollCornerAndResizerLocation, clip);
     }
     InspectorInstrumentation::didPaint(m_owningLayer.layoutObject(), graphicsLayer, &context, LayoutRect(clip));
 #if ENABLE(ASSERT)
     if (Page* page = layoutObject()->frame()->page())
         page->setIsPainting(false);
 #endif
+
+    if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
+        m_owningLayer.layoutObject()->clearRepaintFlagsRecursively();
 }
 
 bool CompositedDeprecatedPaintLayerMapping::isTrackingPaintInvalidations() const
 {
     GraphicsLayerClient* client = compositor();
     return client ? client->isTrackingPaintInvalidations() : false;
 }
 
 #if ENABLE(ASSERT)
 void CompositedDeprecatedPaintLayerMapping::verifyNotPainting()
@@ skipping 142 matching lines @@
     } else if (graphicsLayer == m_scrollingBlockSelectionLayer.get()) {
         name = "Scrolling Block Selection Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink