Make the fuchsia mojo/public repo the source of truth.

mojo/public/java/system/src/org/chromium/mojo/system/Pair.java

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.mojo.system;
-
-
-/**
- * A pair of object.
- *
- * @param <F> Type of the first element.
- * @param <S> Type of the second element.
- */
-public class Pair<F, S> {
-
-    public final F first;
-    public final S second;
-
-    /**
-     * Dedicated constructor.
-     *
-     * @param first the first element of the pair.
-     * @param second the second element of the pair.
-     */
-    public Pair(F first, S second) {
-        this.first = first;
-        this.second = second;
-    }
-
-    /**
-     * equals() that handles null values.
-     */
-    private boolean equals(Object o1, Object o2) {
-        return o1 == null ? o2 == null : o1.equals(o2);
-    }
-
-    /**
-     * @see Object#equals(Object)
-     */
-    @Override
-    public boolean equals(Object o) {
-        if (!(o instanceof Pair)) {
-            return false;
-        }
-        Pair<?, ?> p = (Pair<?, ?>) o;
-        return equals(first, p.first) && equals(second, p.second);
-    }
-
-    /**
-     * @see Object#hashCode()
-     */
-    @Override
-    public int hashCode() {
-        return (first == null ? 0 : first.hashCode()) ^ (second == null ? 0 : second.hashCode());
-    }
-
-    /**
-     * Helper method for creating a pair.
-     *
-     * @param a the first element of the pair.
-     * @param b the second element of the pair.
-     * @return the pair containing a and b.
-     */
-    public static <A, B> Pair<A, B> create(A a, B b) {
-        return new Pair<A, B>(a, b);
-    }
-}