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

third_party/WebKit/Source/core/layout/LayoutBlock.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple 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
  * License as published by the Free Software Foundation; either
@@ skipping 476 matching lines @@
 
  public:
   bool ShouldPaintCursorCaret() const;
   bool ShouldPaintDragCaret() const;
   bool ShouldPaintCarets() const {
     return ShouldPaintCursorCaret() || ShouldPaintDragCaret();
   }
 
  protected:
   PaintInvalidationReason InvalidatePaint(
-      const PaintInvalidationState&) override;
-  PaintInvalidationReason InvalidatePaint(
       const PaintInvalidatorContext&) const override;
 
   void ClearPreviousVisualRects() override;
 
  private:
   LayoutRect LocalCaretRect(
       InlineBox*,
       int caret_offset,
       LayoutUnit* extra_width_to_end_of_line = nullptr) final;
   bool IsInlineBoxWrapperActuallyChild() const;
@@ skipping 61 matching lines @@
   // TODO(lunalu): Temporary in order to ensure compatibility with existing
   // layout test results.
   virtual void AdjustChildDebugRect(LayoutRect&) const {}
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBlock, IsLayoutBlock());
 
 }  // namespace blink
 
 #endif  // LayoutBlock_h