Mark some non-spinvalidation methods deprecated, and update paint/README.md

third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. 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
@@ skipping 532 matching lines @@
       // practice is a significant performance savings.
       Layer()->AddLayerHitTestRects(rects);
     }
   } else {
     LayoutObject::AddLayerHitTestRects(rects, current_layer, layer_offset,
                                        container_rect);
   }
 }
 
 DISABLE_CFI_PERF
-void LayoutBoxModelObject::InvalidateTreeIfNeeded(
+void LayoutBoxModelObject::DeprecatedInvalidateTree(
     const PaintInvalidationState& paint_invalidation_state) {
   DCHECK(!RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled());
   EnsureIsReadyForPaintInvalidation();
 
   PaintInvalidationState new_paint_invalidation_state(paint_invalidation_state,
                                                       *this);
   if (!ShouldCheckForPaintInvalidationWithPaintInvalidationState(
           new_paint_invalidation_state))
     return;
 
   if (MayNeedPaintInvalidationSubtree())
     new_paint_invalidation_state
         .SetForceSubtreeInvalidationCheckingWithinContainer();
 
   ObjectPaintInvalidator paint_invalidator(*this);
   LayoutRect previous_visual_rect = VisualRect();
   LayoutPoint previous_location = paint_invalidator.LocationInBacking();
   PaintInvalidationReason reason =
-      InvalidatePaint(new_paint_invalidation_state);
+      DeprecatedInvalidatePaint(new_paint_invalidation_state);
 
   if (previous_location != paint_invalidator.LocationInBacking()) {
     new_paint_invalidation_state
         .SetForceSubtreeInvalidationCheckingWithinContainer();
   }
 
   // TODO(wangxianzhu): This is a workaround for crbug.com/490725. We don't have
   // enough saved information to do accurate check of clipping change. Will
   // remove when we remove rect-based paint invalidation.
   if (previous_visual_rect != VisualRect() &&
       !UsesCompositedScrolling()
       // Note that isLayoutView() below becomes unnecessary after the launch of
       // root layer scrolling.
       && (HasOverflowClip() || IsLayoutView())) {
     new_paint_invalidation_state
         .SetForceSubtreeInvalidationRectUpdateWithinContainer();
   }
 
   new_paint_invalidation_state.UpdateForChildren(reason);
-  InvalidatePaintOfSubtreesIfNeeded(new_paint_invalidation_state);
+  DeprecatedInvalidatePaintOfSubtrees(new_paint_invalidation_state);
 
   ClearPaintInvalidationFlags();
 }
 
 void LayoutBoxModelObject::AddOutlineRectsForNormalChildren(
     Vector<LayoutRect>& rects,
     const LayoutPoint& additional_offset,
     IncludeBlockVisualOverflowOrNot include_block_overflows) const {
   for (LayoutObject* child = SlowFirstChild(); child;
        child = child->NextSibling()) {
@@ skipping 879 matching lines @@
   if (root_element_style->HasBackground())
     return false;
 
   if (GetNode() != GetDocument().FirstBodyElement())
     return false;
 
   return true;
 }
 
 }  // namespace blink