Make text visible when font loading takes longer than 3 seconds

Source/core/css/CSSFontFace.cpp

Index: Source/core/css/CSSFontFace.cpp
diff --git a/Source/core/css/CSSFontFace.cpp b/Source/core/css/CSSFontFace.cpp
index ea3137335aad086073aa6d0af0f95dcd04169ec1..525bb4d31ba3da76e715d4dd08113c8973909654 100644
--- a/Source/core/css/CSSFontFace.cpp
+++ b/Source/core/css/CSSFontFace.cpp
@@ -87,6 +87,14 @@ void CSSFontFace::fontLoaded(CSSFontFaceSource* source)
         m_segmentedFontFace->fontLoaded(this);
 }
 
+void CSSFontFace::fontLoadWaitLimitExceeded(CSSFontFaceSource* source)
+{
+    if (!isValid() || source != m_sources.first())
+        return;
+    if (m_segmentedFontFace)
+        m_segmentedFontFace->fontLoadWaitLimitExceeded(this);
+}
+
 PassRefPtr<SimpleFontData> CSSFontFace::getFontData(const FontDescription& fontDescription)
 {
     if (!isValid())