[AF] Adapt sync wallet bridge to the new wallet_metadata bridge

This CL makes the wallet_data bridge NOT write wallet metadata into the
DB if metadata is handled by the new USS bridge. This CL is part of a
new design for splitting responsibilities between the two bridges.

Bug: 853688
Change-Id: Ib9299af8c1440fbf911d2a9ebe3cfa069bc29853
Reviewed-on: https://chromium-review.googlesource.com/c/1375728
Reviewed-by: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Commit-Queue: Jan Krcal <jkrcal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616351}
2 files changed