[Sync::USS] Implement PasswordSyncBridge::GetAllDataForDebugging()

Bug: 902349
Change-Id: I443f2f1fde84edc612efe505d837a25144f0496e
Reviewed-on: https://chromium-review.googlesource.com/c/1437191
Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#626500}
2 files changed