[AF] Avoid flakiness in address conversion in wallet_metadata tests

This CL makes sure we pass the SyncService to PDM before actual sync
starts. Passing it later caused a rare flakiness on the waterfall.

Bug: 911953, 911953
Change-Id: I691361de116d1ef8c504cb900f3efe5f3fc8f0e4
Reviewed-on: https://chromium-review.googlesource.com/c/1379893
Commit-Queue: Jan Krcal <jkrcal@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#617124}
1 file changed