Separate backgroundObscurationStatus and hasBoxDecorationBackground

third_party/WebKit/Source/core/layout/LayoutObject.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 1370 matching lines @@
     PaintInvalidationReason invalidationReason = getPaintInvalidationReason(paintInvalidationState, oldBounds, oldLocation, newBounds, newLocation);
 
     // We need to invalidate the selection before checking for whether we are doing a full invalidation.
     // This is because we need to update the old rect regardless.
     invalidateSelectionIfNeeded(paintInvalidationContainer, paintInvalidationState, invalidationReason);
 
     TRACE_EVENT2(TRACE_DISABLED_BY_DEFAULT("blink.invalidation"), "LayoutObject::invalidatePaintIfNeeded()",
         "object", this->debugName().ascii(),
         "info", jsonObjectForOldAndNewRects(oldBounds, oldLocation, newBounds, newLocation));
 
-    bool boxDecorationBackgroundObscured = boxDecorationBackgroundIsKnownToBeObscured();
-    if (!isFullPaintInvalidationReason(invalidationReason) && boxDecorationBackgroundObscured != m_bitfields.lastBoxDecorationBackgroundObscured())
+    bool backgroundObscured = backgroundIsKnownToBeObscured();
+    if (!isFullPaintInvalidationReason(invalidationReason) && backgroundObscured != m_bitfields.previousBackgroundObscured())
         invalidationReason = PaintInvalidationBackgroundObscurationChange;
-    m_bitfields.setLastBoxDecorationBackgroundObscured(boxDecorationBackgroundObscured);
+    m_bitfields.setPreviousBackgroundObscured(backgroundObscured);
 
     if (invalidationReason == PaintInvalidationNone) {
         // TODO(trchen): Currently we don't keep track of paint offset of layout objects.
         // There are corner cases that the display items need to be invalidated for paint offset
         // mutation, but incurs no pixel difference (i.e. bounds stay the same) so no rect-based
         // invalidation is issued. See crbug.com/508383 and crbug.com/515977.
         // This is a workaround to force display items to update paint offset.
         if (!RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled() && paintInvalidationState.forcedSubtreeInvalidationCheckingWithinContainer())
             invalidateDisplayItemClientsWithPaintInvalidationState(paintInvalidationState, PaintInvalidationLocationChange);
 
@@ skipping 2245 matching lines @@
         const blink::LayoutObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showLayoutTreeAndMark(object1, "*", object2, "-", 0);
     } else {
         WTFLogAlways("%s", "Cannot showLayoutTree. Root is (nil)");
     }
 }
 
 #endif