commit 1af581e64a1585e67bc1102611efd155b5aa8150
author Marcin Wiącek <marcin@mwiacek.com> Thu Mar 14 20:51:43 2019
committer Commit Bot <commit-bot@chromium.org> Thu Mar 14 20:51:43 2019
tree 3c5af86b5c88a4d6be19bbafe260b6c0007db9c0
parent 6b0a72e887407e781fa370f2c8ba15b5e82bc2e8

Migrate ReferenceTimestampState to @IntDef

@IntDef/@StringDef annotation are preferred way for declaring
set of String/int values.

1. they need less space in APK than enum, see
https://developer.android.com/topic/performance/reduce-apk-size#remove-enums
2. they give more control over allowed values than "static final" values

Patch is migrating ReferenceTimestampState into @IntDef using rules similar to other @IntDef inside Chromium project:

1. with @IntDef/@StringDef first, @Retention second
   and related @interface third
2. with values inside @interface
3. with @Retention(RetentionPolicy.SOURCE)
4. without "static final" in the @interface

BUG=919666

Change-Id: I6cd29a847a26113461af27cd90406166c561a727
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1512639
Commit-Queue: Marcin Wiącek <marcin@mwiacek.com>
Reviewed-by: Simeon Anfinrud <sanfin@chromium.org>
Reviewed-by: Kenneth MacKay <kmackay@chromium.org>
Cr-Commit-Position: refs/heads/master@{#640914}