Move existing @IntDef elements inside existing LocationBarButtonType

@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

Main goal of patch is writing "static final" values, enum
and some classes in one common @IntDef/@StringDef form:

1. with @IntDef/@StringDef first, @Retention second
   and related @interface third
2. with values inside @interface
3. with NUM_ENTRIES declaring number of entries if necessary
4. with comment about numbering from 0 without gaps when necessary
5. with @Retention(RetentionPolicy.SOURCE)
6. without "static final" in the @interface

Change-Id: Ifa37fd39666c206bf727f97fbf1f5c2e2a277ac0
Reviewed-on: https://chromium-review.googlesource.com/1147522
Reviewed-by: Yusuf Ozuysal <yusufo@chromium.org>
Commit-Queue: Marcin WiÄ…cek <marcin@mwiacek.com>
Cr-Commit-Position: refs/heads/master@{#578377}
1 file changed