diff --git a/gfx/thebes/gfxFont.cpp b/gfx/thebes/gfxFont.cpp
index 457d5df2244..d941ccda8e8 100644
--- a/gfx/thebes/gfxFont.cpp
+++ b/gfx/thebes/gfxFont.cpp
@@ -3084,22 +3084,6 @@ gfxTextRun::~gfxTextRun()
     MOZ_COUNT_DTOR(gfxTextRun);
 }
 
-gfxTextRun *
-gfxTextRun::Clone(const gfxTextRunFactory::Parameters *aParams, const void *aText,
-                  PRUint32 aLength, gfxFontGroup *aFontGroup, PRUint32 aFlags)
-{
-    if (!mCharacterGlyphs)
-        return nsnull;
-
-    nsAutoPtr<gfxTextRun> textRun;
-    textRun = gfxTextRun::Create(aParams, aText, aLength, aFontGroup, aFlags);
-    if (!textRun)
-        return nsnull;
-
-    textRun->CopyGlyphDataFrom(this, 0, mCharacterCount, 0);
-    return textRun.forget();
-}
-
 PRBool
 gfxTextRun::SetPotentialLineBreaks(PRUint32 aStart, PRUint32 aLength,
                                    PRPackedBool *aBreakBefore,
diff --git a/gfx/thebes/gfxFont.h b/gfx/thebes/gfxFont.h
index 962dccf7ade..cecdcc5c35d 100644
--- a/gfx/thebes/gfxFont.h
+++ b/gfx/thebes/gfxFont.h
@@ -1702,15 +1702,6 @@ public:
     static gfxTextRun *Create(const gfxTextRunFactory::Parameters *aParams,
         const void *aText, PRUint32 aLength, gfxFontGroup *aFontGroup, PRUint32 aFlags);
 
-    // Clone this textrun, according to the given parameters. This textrun's
-    // glyph data is copied, so the text and length must be the same as this
-    // textrun's. If there's a problem, return null. Actual linebreaks will
-    // be set as per aParams; there will be no potential linebreaks.
-    // If aText is not persistent (aFlags & TEXT_IS_PERSISTENT), the
-    // textrun will copy it.
-    virtual gfxTextRun *Clone(const gfxTextRunFactory::Parameters *aParams, const void *aText,
-                              PRUint32 aLength, gfxFontGroup *aFontGroup, PRUint32 aFlags);
-
     /**
      * This class records the information associated with a character in the
      * input string. It's optimized for the case where there is one glyph