--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/internal/DebugHistogramImpl.java	2017-07-07 09:32:20.000000000 -0700
+++ /dev/null	2017-07-07 09:32:20.000000000 -0700
@@ -1,72 +0,0 @@
-/*
- * Copyright (c) 2013, 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
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-package org.graalvm.compiler.debug.internal;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-
-import org.graalvm.compiler.debug.DebugHistogram;
-
-public class DebugHistogramImpl implements DebugHistogram {
-
-    private final String name;
-    private HashMap<Object, CountedValue> map = new HashMap<>();
-
-    public DebugHistogramImpl(String name) {
-        this.name = name;
-    }
-
-    @Override
-    public void add(Object value) {
-        CountedValue cv = map.get(value);
-        if (cv == null) {
-            map.put(value, new CountedValue(1, value));
-        } else {
-            cv.inc();
-        }
-    }
-
-    @Override
-    public void add(Object value, long count) {
-        CountedValue cv = map.get(value);
-        if (cv == null) {
-            map.put(value, new CountedValue(count, value));
-        } else {
-            cv.add(count);
-        }
-    }
-
-    @Override
-    public String getName() {
-        return name;
-    }
-
-    @Override
-    public List<CountedValue> getValues() {
-        ArrayList<CountedValue> res = new ArrayList<>(map.values());
-        Collections.sort(res);
-        return res;
-    }
-}