Use removeFontFace to avoid resetting fontSelector.

Source/platform/fonts/FontDescription.h

Index: Source/platform/fonts/FontDescription.h
diff --git a/Source/platform/fonts/FontDescription.h b/Source/platform/fonts/FontDescription.h
index 642c95b85ab5b342a4487a27bcb9f423603fc7a4..1386996e5fd7c2f3f4d94a146100485fcd818d8e 100644
--- a/Source/platform/fonts/FontDescription.h
+++ b/Source/platform/fonts/FontDescription.h
@@ -116,7 +116,11 @@ public:
     FontWeight lighterWeight() const;
     FontWeight bolderWeight() const;
     GenericFamilyType genericFamily() const { return static_cast<GenericFamilyType>(m_genericFamily); }
+#if OS(MACOSX)
+    bool usePrinterFont() const { return false; }
+#else
     bool usePrinterFont() const { return m_usePrinterFont; }
+#endif
     // only use fixed default size when there is only one font family, and that family is "monospace"
     bool useFixedDefaultSize() const { return genericFamily() == MonospaceFamily && !family().next() && family().family() == FontFamilyNames::webkit_monospace; }
     Kerning kerning() const { return static_cast<Kerning>(m_kerning); }
@@ -152,11 +156,7 @@ public:
     void setIsAbsoluteSize(bool s) { m_isAbsoluteSize = s; }
     void setWeight(FontWeight w) { m_weight = w; }
     void setGenericFamily(GenericFamilyType genericFamily) { m_genericFamily = genericFamily; }
-#if OS(MACOSX)
-    void setUsePrinterFont(bool) { }
-#else
     void setUsePrinterFont(bool p) { m_usePrinterFont = p; }
-#endif
     void setKerning(Kerning kerning) { m_kerning = kerning; }
     void setCommonLigaturesState(LigaturesState commonLigaturesState) { m_commonLigaturesState = commonLigaturesState; }
     void setDiscretionaryLigaturesState(LigaturesState discretionaryLigaturesState) { m_discretionaryLigaturesState = discretionaryLigaturesState; }