1 files changed, 6 insertions, 1 deletions
diff --git a/src/3rdparty/webkit/WebCore/platform/graphics/FontData.h b/src/3rdparty/webkit/WebCore/platform/graphics/FontData.h
index cb799197e..76927f5a5 100644
--- a/src/3rdparty/webkit/WebCore/platform/graphics/FontData.h
+++ b/src/3rdparty/webkit/WebCore/platform/graphics/FontData.h
@@ -32,8 +32,9 @@
 namespace WebCore {
 
 class SimpleFontData;
+class String;
 
-class FontData : Noncopyable {
+class FontData : public Noncopyable {
 public:
     FontData()
         : m_maxGlyphPageTreeLevel(0)
@@ -51,6 +52,10 @@ public:
     void setMaxGlyphPageTreeLevel(unsigned level) const { m_maxGlyphPageTreeLevel = level; }
     unsigned maxGlyphPageTreeLevel() const { return m_maxGlyphPageTreeLevel; }
 
+#ifndef NDEBUG
+    virtual String description() const = 0;
+#endif
+
 private:
     mutable unsigned m_maxGlyphPageTreeLevel;
 };