Reapply the non-MathExtras parts of

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 2bb25d1b79d49d82f75d64f820bdd45e88e2d0b7..f736b52867fcd744493a643c250d152edcd8f4c6 100644
--- a/Source/platform/fonts/FontDescription.h
+++ b/Source/platform/fonts/FontDescription.h
@@ -178,8 +178,8 @@ public:
     FontCacheKey cacheKey(const FontFaceCreationParams&, FontTraits desiredTraits = FontTraits(0)) const;
 
     void setFamily(const FontFamily& family) { m_familyList = family; }
-    void setComputedSize(float s) { m_computedSize = clampToFloat(s); }
-    void setSpecifiedSize(float s) { m_specifiedSize = clampToFloat(s); }
+    void setComputedSize(float s) { m_computedSize = clampTo<float>(s); }
+    void setSpecifiedSize(float s) { m_specifiedSize = clampTo<float>(s); }
     void setStyle(FontStyle i) { m_style = i; }
     void setVariant(FontVariant c) { m_variant = c; }
     void setVariantLigatures(const VariantLigatures&);