[Sync] Move //sync to //components/sync.

sync/android/java/src/org/chromium/sync/notifier/RandomizedInvalidationClientNameGenerator.java

-// Copyright 2013 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.sync.notifier;
-
-import android.util.Base64;
-
-import org.chromium.base.annotations.MainDex;
-
-import java.util.Random;
-
-/**
- * Generates a fully random client ID.
- *
- * This ID will not persist across restarts.  Using this ID will break the invalidator's "reflection
- * blocking" feature.  That's unfortunate, but better than using a hard-coded ID.  A hard-coded ID
- * could prevent invalidations from being delivered.
- */
-@MainDex
-class RandomizedInvalidationClientNameGenerator implements InvalidationClientNameGenerator {
-    private static final Random RANDOM = new Random();
-
-    RandomizedInvalidationClientNameGenerator() {}
-
-    /**
-     * Generates a random ID prefixed with the string "BadID".
-     *
-     * The prefix is intended to grab attention.  We should never use it in real builds.  Hopefully,
-     * it will induce someone to file a bug if they see it.
-     *
-     * However, as bad as it is, this ID is better than a hard-coded default or none at all.  See
-     * the class description for more details.
-     */
-    public byte[] generateInvalidatorClientName() {
-        byte[] randomBytes = new byte[8];
-        RANDOM.nextBytes(randomBytes);
-        String encoded = Base64.encodeToString(randomBytes, 0, randomBytes.length, Base64.NO_WRAP);
-        String idString = "BadID" + encoded;
-        return idString.getBytes();
-    }
-}