diff -r 74cd21f2c2fe -r 7a9ef837e57f src/share/classes/com/sun/tools/doclets/formats/html/markup/ContentBuilder.java
--- a/src/share/classes/com/sun/tools/doclets/formats/html/markup/ContentBuilder.java	Tue May 14 10:14:52 2013 -0700
+++ b/src/share/classes/com/sun/tools/doclets/formats/html/markup/ContentBuilder.java	Tue May 14 10:14:52 2013 -0700
@@ -81,6 +81,13 @@
         return true;
     }
 
+    public int charCount() {
+        int n = 0;
+        for (Content c : contents)
+            n += c.charCount();
+        return n;
+    }
+
     private void ensureMutableContents() {
         if (contents.isEmpty())
             contents = new ArrayList<Content>();