Convert first letter into a pseudo element.

Source/core/rendering/RenderBlock.h

Index: Source/core/rendering/RenderBlock.h
diff --git a/Source/core/rendering/RenderBlock.h b/Source/core/rendering/RenderBlock.h
index 7d5270cc9d8dcfb19eb95a5e476f4eeb8c1c5dd8..10cfda9e753171c72609f5a7ebfbe6c6669297d1 100644
--- a/Source/core/rendering/RenderBlock.h
+++ b/Source/core/rendering/RenderBlock.h
@@ -226,7 +226,6 @@ public:
     LayoutUnit collapsedMarginBeforeForChild(const RenderBox* child) const;
     LayoutUnit collapsedMarginAfterForChild(const RenderBox* child) const;
 
-    virtual void updateFirstLetter();
     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
 
     virtual void scrollbarsChanged(bool /*horizontalScrollbarChanged*/, bool /*verticalScrollbarChanged*/) { }
@@ -362,10 +361,6 @@ private:
     void insertIntoTrackedRendererMaps(RenderBox* descendant, TrackedDescendantsMap*&, TrackedContainerMap*&);
     static void removeFromTrackedRendererMaps(RenderBox* descendant, TrackedDescendantsMap*&, TrackedContainerMap*&);
 
-    void createFirstLetterRenderer(RenderObject* firstLetterBlock, RenderText& currentChild, unsigned length);
-    void updateFirstLetterStyle(RenderObject* firstLetterBlock, RenderObject* firstLetterContainer);
-    bool isInvalidFirstLetterRenderer(RenderObject*) const;
-
     Node* nodeForHitTest() const;
 
 private: