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

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

Index: third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
index f7dff3ea1d8852f8a7c57f1fb1e7ba5fb0df5d2b..bb13b0c3601e4c478ca97148979243371aa91f04 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
@@ -4647,12 +4647,12 @@ void LayoutBlockFlow::AddOutlineRects(
         include_block_overflows);
 }
 
-PaintInvalidationReason LayoutBlockFlow::InvalidatePaint(
+PaintInvalidationReason LayoutBlockFlow::DeprecatedInvalidatePaint(
     const PaintInvalidationState& paint_invalidation_state) {
   if (ContainsFloats())
     paint_invalidation_state.PaintingLayer().SetNeedsPaintPhaseFloat();
 
-  return LayoutBlock::InvalidatePaint(paint_invalidation_state);
+  return LayoutBlock::DeprecatedInvalidatePaint(paint_invalidation_state);
 }
 
 void LayoutBlockFlow::InvalidateDisplayItemClients(