Fix not autosizing ruby elements issue.

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 199 matching lines @@
   bool isRenderedCharacter(int offsetInNode) const;
 
   void removeAndDestroyTextBoxes();
 
   PassRefPtr<AbstractInlineTextBox> firstAbstractInlineTextBox();
 
   float hyphenWidth(const Font&, TextDirection);
 
   LayoutRect debugRect() const override;
 
+  void autosizingMultiplerChanged() {
+    m_knownToHaveNoOverflowAndNoFallbackFonts = false;
+  }
+
  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&,
@@ skipping 119 matching lines @@
 
 inline LayoutText* Text::layoutObject() const {
   return toLayoutText(CharacterData::layoutObject());
 }
 
 void applyTextTransform(const ComputedStyle*, String&, UChar);
 
 }  // namespace blink
 
 #endif  // LayoutText_h