Make text visible when font loading takes longer than 3 seconds

Source/platform/fonts/Font.h

Index: Source/platform/fonts/Font.h
diff --git a/Source/platform/fonts/Font.h b/Source/platform/fonts/Font.h
index 6c93603f58d389509ae864e0e363a8f57ae7d7a0..9ac30f6a85d63b0d8e9e22395d7f6d3bdd6e7624 100644
--- a/Source/platform/fonts/Font.h
+++ b/Source/platform/fonts/Font.h
@@ -175,6 +175,11 @@ private:
         return m_fontFallbackList && m_fontFallbackList->loadingCustomFonts();
     }
 
+    bool shouldSkipDrawing() const
+    {
+        return m_fontFallbackList && m_fontFallbackList->shouldSkipDrawing();
+    }
+
     FontDescription m_fontDescription;
     mutable RefPtr<FontFallbackList> m_fontFallbackList;
 };