Rename drawSystemFocusRing() to drawFocusIfNeeded()

Source/core/html/canvas/CanvasRenderingContext2D.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 212 matching lines @@
     PassRefPtr<TextMetrics> measureText(const String& text);
 
     LineCap getLineCap() const { return state().m_lineCap; }
     LineJoin getLineJoin() const { return state().m_lineJoin; }
 
     bool imageSmoothingEnabled() const;
     void setImageSmoothingEnabled(bool);
 
     PassRefPtr<Canvas2DContextAttributes> getContextAttributes() const;
 
-    void drawSystemFocusRing(Element*);
+    void drawFocusIfNeeded(Element*);
     bool drawCustomFocusRing(Element*);
 
 private:
     struct State FINAL : CSSFontSelectorClient {
         State();
         virtual ~State();
 
         State(const State&);
         State& operator=(const State&);
 
@@ skipping 92 matching lines @@
     bool m_usesCSSCompatibilityParseMode;
     bool m_hasAlpha;
     MutableStylePropertyMap m_fetchedFonts;
 };
 
 DEFINE_TYPE_CASTS(CanvasRenderingContext2D, CanvasRenderingContext, context, context->is2d(), context.is2d());
 
 } // namespace WebCore
 
 #endif