New paint invalidation using paint property tree walk

third_party/WebKit/Source/core/layout/svg/LayoutSVGInlineText.cpp

 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006 Apple Computer Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 217 matching lines @@
     fontDescription.setComputedSize(FontSize::getComputedSizeFromSpecifiedSize(&document, scalingFactor, fontDescription.isAbsoluteSize(), fontDescription.specifiedSize(), DoNotUseSmartMinimumForFontSize));
 
     scaledFont = Font(fontDescription);
     scaledFont.update(document.styleEngine().fontSelector());
 }
 
 LayoutRect LayoutSVGInlineText::clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) const
 {
     // FIXME: The following works because LayoutSVGBlock has forced slow rect mapping of the paintInvalidationState.
     // Should let this really work with paintInvalidationState's fast mapping and remove the assert.
-    ASSERT(!paintInvalidationState || !paintInvalidationState->canMapToContainer(paintInvalidationContainer));
+    // TODO(wangxianzhu): Check if we should re-enable or change this assert for slimmingPaintInvalidation.
+    ASSERT(RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled() || !paintInvalidationState || !paintInvalidationState->canMapToContainer(paintInvalidationContainer));
     return parent()->clippedOverflowRectForPaintInvalidation(paintInvalidationContainer, paintInvalidationState);
 }
 
 PassRefPtr<StringImpl> LayoutSVGInlineText::originalText() const
 {
     RefPtr<StringImpl> result = LayoutText::originalText();
     if (!result)
         return nullptr;
     return applySVGWhitespaceRules(result, style() && style()->whiteSpace() == PRE);
 }
 
 } // namespace blink