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

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. 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 384 matching lines @@
   // TODO(trchen): Remove this hack once we fixed all callers.
   FloatRect absolute_bounding_box =
       LocalToAbsoluteQuad(FloatRect(ReplacedContentRect())).BoundingBox();
   frame_rect.SetLocation(RoundedIntPoint(absolute_bounding_box.Location()));
 
   // Why is the protector needed?
   RefPtr<LayoutPart> protector(this);
   frame_or_plugin.SetFrameRect(frame_rect);
 }
 
-void LayoutPart::InvalidatePaintOfSubtreesIfNeeded(
+void LayoutPart::DeprecatedInvalidatePaintOfSubtrees(
     const PaintInvalidationState& paint_invalidation_state) {
   FrameView* frame_view = ChildFrameView();
   if (frame_view && !IsThrottledFrameView()) {
     // |childFrameView| is in another document, which could be
     // missing its LayoutView. TODO(jchaffraix): Ideally we should
     // not need this code.
     if (LayoutView* child_layout_view = ToLayoutView(
             LayoutAPIShim::LayoutObjectFrom(frame_view->GetLayoutViewItem()))) {
       PaintInvalidationState child_view_paint_invalidation_state(
           paint_invalidation_state, *child_layout_view);
-      frame_view->InvalidateTreeIfNeeded(child_view_paint_invalidation_state);
+      frame_view->DeprecatedInvalidateTree(child_view_paint_invalidation_state);
     }
   }
 
-  LayoutReplaced::InvalidatePaintOfSubtreesIfNeeded(paint_invalidation_state);
+  LayoutReplaced::DeprecatedInvalidatePaintOfSubtrees(paint_invalidation_state);
 }
 
 bool LayoutPart::IsThrottledFrameView() const {
   if (FrameView* frame_view = ChildFrameView())
     return frame_view->ShouldThrottleRendering();
   return false;
 }
 
 }  // namespace blink