tree 395d504ad5863e78aa38460d98a707406434a471
parent e9fbacf6c5a6d88f96022b6d1c378de8c9000385
author Pinyao Ting <pinyaoting@google.com> 1588210539 -0700
committer Pinyao Ting <pinyaoting@google.com> 1588646935 -0700

Persists bubbles to disk (part 1)

Bubbles are now write-through an xml file on disk upon addition/update,
asynchronously.

Bug: 149713060
Test: manually verify when new bubble pops up it is write through xml
Change-Id: I5d9f58cd0858ca96d5ec05c72aad4ae3a18c0aa0