diff -r 8c82412da698 -r 786825220790 src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/AbstractIndexWriter.java
--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/AbstractIndexWriter.java	Fri Mar 01 04:34:28 2019 -0800
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/AbstractIndexWriter.java	Mon Mar 04 11:19:34 2019 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -30,7 +30,6 @@
 import java.util.zip.*;
 
 import javax.lang.model.element.Element;
-import javax.lang.model.element.ElementKind;
 import javax.lang.model.element.ExecutableElement;
 import javax.lang.model.element.ModuleElement;
 import javax.lang.model.element.PackageElement;
@@ -38,7 +37,6 @@
 import javax.lang.model.util.SimpleElementVisitor9;
 
 import com.sun.source.doctree.DocTree;
-import jdk.javadoc.internal.doclets.formats.html.markup.HtmlConstants;
 import jdk.javadoc.internal.doclets.formats.html.markup.HtmlStyle;
 import jdk.javadoc.internal.doclets.formats.html.markup.HtmlTag;
 import jdk.javadoc.internal.doclets.formats.html.markup.HtmlTree;
@@ -170,7 +168,7 @@
         String unicode = uc.toString();
         contentTree.addContent(getMarkerAnchorForIndex(unicode));
         Content headContent = new StringContent(unicode);
-        Content heading = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING, false,
+        Content heading = HtmlTree.HEADING(Headings.CONTENT_HEADING, false,
                 HtmlStyle.title, headContent);
         contentTree.addContent(heading);
     }