[oilpan] Move CSSFontFace to the managed heap

Source/core/css/CSSSegmentedFontFace.h

Index: Source/core/css/CSSSegmentedFontFace.h
diff --git a/Source/core/css/CSSSegmentedFontFace.h b/Source/core/css/CSSSegmentedFontFace.h
index 0a184222af5813ddc2d6e93a5e157e8624320d07..9c345cbcef8fa33a5fce94d4141798a0c350e9ba 100644
--- a/Source/core/css/CSSSegmentedFontFace.h
+++ b/Source/core/css/CSSSegmentedFontFace.h
@@ -50,9 +50,9 @@ public:
 
     CSSFontSelector* fontSelector() const { return m_fontSelector; }
 
-    void fontLoaded(CSSFontFace*);
+    void fontLoaded(Handle<CSSFontFace>);
 
-    void appendFontFace(PassRefPtr<CSSFontFace>);
+    void appendFontFace(Handle<CSSFontFace>);
 
     PassRefPtr<FontData> getFontData(const FontDescription&);
 
@@ -66,7 +66,7 @@ public:
     bool checkFont() const;
     void loadFont(const FontDescription&, PassRefPtr<LoadFontCallback> loadCallback);
 
-    void accept(Visitor*) const { }
+    void accept(Visitor*) const;
 
 private:
     CSSSegmentedFontFace(CSSFontSelector*);
@@ -77,7 +77,7 @@ private:
 
     CSSFontSelector* m_fontSelector;
     HashMap<unsigned, RefPtr<SegmentedFontData> > m_fontDataTable;
-    Vector<RefPtr<CSSFontFace>, 1> m_fontFaces;
+    Vector<Member<CSSFontFace>, 1> m_fontFaces;
     Vector<RefPtr<LoadFontCallback> > m_callbacks;
 };