[Oilpan]: Moving the FontSelector/FontCacheClient, CSSSegmentedFontFace, and FontFaceCache to the o…

Source/platform/fonts/FontFallbackList.h

Index: Source/platform/fonts/FontFallbackList.h
diff --git a/Source/platform/fonts/FontFallbackList.h b/Source/platform/fonts/FontFallbackList.h
index dc799a56dabecb308d0e84bcae2274d2be3f9ee2..162972fd78699aefbb8a69d02b2f3b7e626cd585 100644
--- a/Source/platform/fonts/FontFallbackList.h
+++ b/Source/platform/fonts/FontFallbackList.h
@@ -67,7 +67,7 @@ public:
     static PassRefPtr<FontFallbackList> create() { return adoptRef(new FontFallbackList()); }
 
     ~FontFallbackList() { releaseFontData(); }
-    void invalidate(PassRefPtr<FontSelector>);
+    void invalidate(PassRefPtrWillBeRawPtr<FontSelector>);
 
     bool isFixedPitch(const FontDescription& fontDescription) const
     {
@@ -109,7 +109,7 @@ private:
     mutable GlyphPages m_pages;
     mutable GlyphPageTreeNode* m_pageZero;
     mutable const SimpleFontData* m_cachedPrimarySimpleFontData;
-    RefPtr<FontSelector> m_fontSelector;
+    RefPtrWillBePersistent<FontSelector> m_fontSelector;
     mutable WidthCache m_widthCache;
     unsigned m_fontSelectorVersion;
     mutable int m_familyIndex;