Refactor ListChangesOption out to extension API

Change-Id: I98a582b13b136969c910ab59d64c45ada38148da

gerrit-common/src/main/java/com/google/gerrit/common/changes/ListChangesOption.java

@@ -1,88 +0,0 @@
-// Copyright (C) 2012 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package com.google.gerrit.common.changes;
-
-import java.util.EnumSet;
-
-/** Output options available when using {@code /changes/} RPCs. */
-public enum ListChangesOption {
-  LABELS(0),
-  DETAILED_LABELS(8),
-
-  /** Return information on the current patch set of the change. */
-  CURRENT_REVISION(1),
-  ALL_REVISIONS(2),
-
-  /** If revisions are included, parse the commit object. */
-  CURRENT_COMMIT(3),
-  ALL_COMMITS(4),
-
-  /** If a patch set is included, include the files of the patch set. */
-  CURRENT_FILES(5),
-  ALL_FILES(6),
-
-  /** If accounts are included, include detailed account info. */
-  DETAILED_ACCOUNTS(7),
-
-  /** Include messages associated with the change. */
-  MESSAGES(9),
-
-  /** Include allowed actions client could perform. */
-  CURRENT_ACTIONS(10),
-
-  /** Set the reviewed boolean for the caller. */
-  REVIEWED(11),
-
-  /** Include draft comments for the caller. */
-  DRAFT_COMMENTS(12),
-
-  /** Include download commands for the caller. */
-  DOWNLOAD_COMMANDS(13);
-
-  private final int value;
-
-  private ListChangesOption(int v) {
-    this.value = v;
-  }
-
-  public int getValue() {
-    return value;
-  }
-
-  public static EnumSet<ListChangesOption> fromBits(int v) {
-    EnumSet<ListChangesOption> r = EnumSet.noneOf(ListChangesOption.class);
-    for (ListChangesOption o : ListChangesOption.values()) {
-      if ((v & (1 << o.value)) != 0) {
-        r.add(o);
-        v &= ~(1 << o.value);
-      }
-      if (v == 0) {
-        return r;
-      }
-    }
-    if (v != 0) {
-      throw new IllegalArgumentException("unknown " + Integer.toHexString(v));
-    }
-    return r;
-  }
-
-  public static int toBits(EnumSet<ListChangesOption> set) {
-    int r = 0;
-    for (ListChangesOption o : set) {
-      r |= 1 << o.value;
-    }
-    return r;
-  }
-}