Consolidate most simple vs. complex Font methods

Source/core/rendering/TextPainter.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef TextPainter_h
 #define TextPainter_h
 
 #include "core/rendering/style/RenderStyleConstants.h"
 #include "platform/fonts/TextBlob.h"
 #include "platform/geometry/FloatPoint.h"
@@ skipping 49 matching lines @@
 
 private:
     void updateGraphicsContext(const Style& style, GraphicsContextStateSaver& saver)
     {
         updateGraphicsContext(m_graphicsContext, style, m_horizontal, saver);
     }
 
     enum PaintInternalStep { PaintText, PaintEmphasisMark };
 
     template <PaintInternalStep step>
-    void paintInternalRun(TextRunPaintInfo&, int from, int to, TextBlobPtr* cachedTextBlob = 0);
+    void paintInternalRun(TextRunPaintInfo&, int from, int to);
 
     template <PaintInternalStep step>
     void paintInternal(int startOffset, int endOffset, int truncationPoint, TextBlobPtr* cachedTextBlob = 0);
 
     void paintEmphasisMarkForCombinedText();
 
     GraphicsContext* m_graphicsContext;
     const Font& m_font;
     const TextRun& m_run;
     FloatPoint m_textOrigin;
     FloatRect m_textBounds;
     bool m_horizontal;
     AtomicString m_emphasisMark;
     int m_emphasisMarkOffset;
     RenderCombineText* m_combinedText;
 };
 
 } // namespace blink
 
 #endif // TextPainter_h