Switch non-gdi windows font path to use new SkFontMgr

Source/core/platform/graphics/FontCache.cpp

Index: Source/core/platform/graphics/FontCache.cpp
diff --git a/Source/core/platform/graphics/FontCache.cpp b/Source/core/platform/graphics/FontCache.cpp
index 49a1c4130986a03cf5db71b4049e374fa96f7cc2..975751f79500e894b24ceb45c8aa951d36075a49 100644
--- a/Source/core/platform/graphics/FontCache.cpp
+++ b/Source/core/platform/graphics/FontCache.cpp
@@ -53,10 +53,12 @@ FontCache* fontCache()
     return &globalFontCache;
 }
 
+#if !OS(WINDOWS) || ENABLE(GDI_FONTS_ON_WINDOWS)
 FontCache::FontCache()
     : m_purgePreventCount(0)
 {
 }
+#endif // !OS(WINDOWS) || ENABLE(GDI_FONTS_ON_WINDOWS)
 
 struct FontPlatformDataCacheKey {
     WTF_MAKE_FAST_ALLOCATED;