Moving fontSelector from StyleResolver to StyleEngine.

Source/core/dom/StyleEngine.h

Index: Source/core/dom/StyleEngine.h
diff --git a/Source/core/dom/StyleEngine.h b/Source/core/dom/StyleEngine.h
index d3b701ad41b3b8919c9de26a6d539db9f49f6649..ad949e74b0bca32435bf46876cb3297132c76c87 100644
--- a/Source/core/dom/StyleEngine.h
+++ b/Source/core/dom/StyleEngine.h
@@ -161,7 +161,9 @@ public:
     bool hasResolver() const { return m_resolver.get(); }
     void clearResolver();
 
-    CSSFontSelector* fontSelector();
+    CSSFontSelector* fontSelector() { return m_fontSelector.get(); }
+    void resetFontSelector();
+
     void didAttach();
     void didDetach();
     bool shouldClearResolver() const;
@@ -218,6 +220,8 @@ private:
     unsigned m_lastResolverAccessCount;
     Timer<StyleEngine> m_resolverThrowawayTimer;
     OwnPtr<StyleResolver> m_resolver;
+
+    RefPtr<CSSFontSelector> m_fontSelector;
 };
 
 }