tree d0556ed110c678a2372e6c98ed301f102ca879a1
parent 40c71a2df3adf527e9ae5b007d8d98df6419e7b3
author Marija Savtchouk <mariasavtchouk@google.com> 1606119654 +0000
committer Marija Savtchouk <mariasavtchouk@google.com> 1606806882 +0000

Expose the mergedOn date of a change in ChangeNotes

This is required for indexing the change on the merge date to implement
the merge search operator.
- Currently, this value can be extracted from
ChangeData.getSubmitApproval
- However, it should not be used as it is planned to deprecate SUBM
label from NoteDb, see LabelId.LEGACY_SUBMIT_NAME, see the change
Id7fbddfa.
- Also cache the mergedOn date as a part of ChangeNotesState.

Change-Id: I5b54fda392f1c6ca86d7f3440a227ded2aa40eb0