same device gets listed multiple times

[LaurenWags]

Description

Found when https://github.com/brave/browser-android-tabs/issues/924 was encountered

It seems like if there's a problem syncing one device on the chain, it gets listed multiple times on another device.

Steps to Reproduce

1. Clean profile on macOS
2. Import some bookmarks (about 45 from a bookmark file and 7 from safari)
3. Create Sync chain.
4. Clean install of 1.0.71 (sync 2) on Android.
5. Add some bookmarks (I had 5 bookmarks across 3 folders)
6. Join sync chain. (used QR code scanner)
7. Get stuck in Loading screen on Android device (https://github.com/brave/browser-android-tabs/issues/924)
8. After trying to get Brave install to work on Android, I looked back at the macOS device and saw that the same Android device was listed multiple times

Actual result:

Expected result:

Device should only be listed once

Reproduces how often:

Unsure, only ran into it in this case.

Brave version (brave://version info)

Brave	0.58.11 Chromium: 71.0.3578.80 (Official Build) beta(64-bit)
Revision	2ac50e7249fbd55e6f517a28131605c9fb9fe897-refs/branch-heads/3578@{#860}
OS	Mac OS X

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds? yes

Website problems only:

• Does the issue resolve itself when disabling Brave Shields? n/a
• Is the issue reproducible on the latest version of Chrome? n/a

Additional Information

[AlexeyBarabash]

looks similar to
https://github.com/brave/browser-android-tabs/issues/919

[AlexeyBarabash]

Fixed with https://github.com/brave/browser-android-tabs/pull/934

[GeetaSarvadnya]

Verification passed on

Brave	0.59.12 Chromium: 72.0.3626.17 (Official Build) beta (64-bit)
Revision	08d2140079f8db14c9eb885a803d231b1a30e817-refs/branch-heads/3626@{#315}
OS	Windows 10

• Verified the STR from description

Verification passed on

Brave 0.59.12 Chromium: 72.0.3626.17 (Official Build) beta (64-bit)
Revision 08d2140079f8db14c9eb885a803d231b1a30e817-refs/branch-heads/3626@{#315}
OS Linux

• Verified the STR from description

Verified passed with

Brave	0.59.18 Chromium: 72.0.3626.28 (Official Build) beta(64-bit)
Revision	997b1040b63bac324e815797ba52be0cd8f616ed-refs/branch-heads/3626@{#461}
OS	Mac OS X

• Verified STR from description
• Verified test plan in https://github.com/brave/browser-android-tabs/pull/934 (and associated Android issues)