Unified invalidation for repaint-only style change of layers

Source/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2045 matching lines @@
             setNeedsLayoutAndPrefWidthsRecalc();
         else if (updatedDiff.needsPositionedMovementLayout())
             setNeedsPositionedMovementLayout();
     }
 
     if (diff.transformChanged() && !needsLayout()) {
         if (RenderBlock* container = containingBlock())
             container->setNeedsOverflowRecalcAfterStyleChange();
     }
 
-    if (updatedDiff.needsRepaint()) {
+    if (updatedDiff.needsRepaintLayer()) {
+        toRenderLayerModelObject(this)->layer()->setShouldDoFullPaintInvalidationIncludingNonCompositingDescendants();
+    } else if (updatedDiff.needsRepaint()) {
         // Invalidate paints with the new style, e.g., for example if we go from not having
         // an outline to having an outline.
 
         // The paintInvalidationForWholeRenderer() call is needed for non-layout changes to style. See the corresponding
         // comment in RenderObject::styleWillChange for why.
         if (needsLayout())
             setShouldDoFullPaintInvalidation(true);
         else if (!selfNeedsLayout())
             paintInvalidationForWholeRenderer();
     }
@@ skipping 1380 matching lines @@
 {
     if (object1) {
         const blink::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif