Move hoverAncestor() override to LayoutBlockFlow.

third_party/WebKit/Source/core/layout/LayoutBlockFlow.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) 2003-2013 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ skipping 296 matching lines @@
     void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
 
     void updateBlockChildDirtyBitsBeforeLayout(bool relayoutChildren, LayoutBox&);
 
     void addOverflowFromFloats();
 
     void computeSelfHitTestRects(Vector<LayoutRect>&, const LayoutPoint& layerOffset) const override;
 
     void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const override;
     void absoluteQuads(Vector<FloatQuad>&) const override;
+    LayoutObject* hoverAncestor() const final;
 
     LayoutUnit logicalRightOffsetForLine(LayoutUnit logicalTop, LayoutUnit fixedOffset, IndentTextOrNot applyTextIndent, LayoutUnit logicalHeight = LayoutUnit()) const
     {
         return adjustLogicalRightOffsetForLine(logicalRightFloatOffsetForLine(logicalTop, fixedOffset, logicalHeight), applyTextIndent);
     }
     LayoutUnit logicalLeftOffsetForLine(LayoutUnit logicalTop, LayoutUnit fixedOffset, IndentTextOrNot applyTextIndent, LayoutUnit logicalHeight = LayoutUnit()) const
     {
         return adjustLogicalLeftOffsetForLine(logicalLeftFloatOffsetForLine(logicalTop, fixedOffset, logicalHeight), applyTextIndent);
     }
 
@@ skipping 306 matching lines @@
 
 // END METHODS DEFINED IN LayoutBlockFlowLine
 
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBlockFlow, isLayoutBlockFlow());
 
 } // namespace blink
 
 #endif // LayoutBlockFlow_h