--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugTimer.java	2017-07-07 09:32:17.000000000 -0700
+++ /dev/null	2017-07-07 09:32:17.000000000 -0700
@@ -1,78 +0,0 @@
-/*
- * Copyright (c) 2012, 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;
-
-import java.util.concurrent.TimeUnit;
-
-/**
- * A timer for some activity of interest. A timer should be deployed using the try-with-resources
- * pattern:
- *
- * <pre>
- * try (TimerCloseable a = timer.start()) {
- *     // the code to time
- * }
- * </pre>
- */
-public interface DebugTimer {
-
-    /**
-     * Starts this timer if timing is {@linkplain Debug#isTimeEnabled() enabled} or this is an
-     * {@linkplain #isConditional() unconditional} timer.
-     *
-     * @return an object that must be closed once the activity has completed to add the elapsed time
-     *         since this call to the total for this timer
-     */
-    DebugCloseable start();
-
-    /**
-     * Sets a flag determining if this timer is only enabled if timing is
-     * {@link Debug#isTimeEnabled() enabled}.
-     */
-    void setConditional(boolean flag);
-
-    /**
-     * Determines if this timer is only enabled if timing is {@link Debug#isTimeEnabled() enabled}.
-     */
-    boolean isConditional();
-
-    /**
-     * Gets the current value of this timer.
-     */
-    long getCurrentValue();
-
-    /**
-     * Gets the time unit of this timer.
-     */
-    TimeUnit getTimeUnit();
-
-    /**
-     * Gets the timer recording the amount time spent within a timed scope minus the time spent in
-     * any nested timed scopes.
-     *
-     * @return null if this timer does not support flat timing
-     */
-    default DebugTimer getFlat() {
-        return null;
-    }
-}