Invalidate first line display item clients when first line style changes

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

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004-2009, 2013 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 165 matching lines @@
     // TODO(eae): Rename and change to only handle the word measurements use
     // case once the simple code path has been removed. crbug.com/404597
     bool canUseSimpleFontCodePath() const { return m_canUseSimpleFontCodePath; }
 
     void removeAndDestroyTextBoxes();
 
     PassRefPtr<AbstractInlineTextBox> firstAbstractInlineTextBox();
 
     float hyphenWidth(const Font&, TextDirection);
 
+    void invalidateDisplayItemClientsOfFirstLine() final;
+
 protected:
     void willBeDestroyed() override;
 
     void styleWillChange(StyleDifference, const ComputedStyle&) final { }
     void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
 
     virtual void setTextInternal(PassRefPtr<StringImpl>);
     virtual UChar previousCharacter() const;
 
     void addLayerHitTestRects(LayerHitTestRects&, const PaintLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const override;
@@ skipping 99 matching lines @@
 inline LayoutText* Text::layoutObject() const
 {
     return toLayoutText(CharacterData::layoutObject());
 }
 
 void applyTextTransform(const ComputedStyle*, String&, UChar);
 
 } // namespace blink
 
 #endif // LayoutText_h