Post sync device name changed

[srirambv]

• Did you search for similar issues before submitting this one?
  Yes

• Describe the issue you encountered:
  Post sync device name changed

• Platform (Win7, 8, 10? macOS? Linux distro?):
  Windows 10 x64 (Pyramid 1)
  Ubuntu 16.04 (Pyramid 0)

• Brave Version (revision SHA):
  Brave 0.15.1
  rev ea5024d

• Steps to reproduce:

  1. Enable sync on Linux
  2. Sync Windows machine with secret code
  3. Delete the profile on Windows machine by removing brave folder from %appdata%
  4. Create a new browser profile on Windows
  5. Sync with Linux using the same secret code
  6. Device name on Linux is changed to the device name on Windows, both devices has only one device listed
  7. Bookmark sync and site setting sync works perfectly
  8. Import browser data from FF/Chrome on Windows, syncs with Linux and creates a duplicate data(Import data gets duplicated after sync #8508)

• Actual result:
  Device name changes after sync

• Expected result:
  Both device name should be retained as it is

• Will the steps above reproduce in a fresh profile? If not what other info can be added?
  No

• Is this an issue in the currently released version?
  No

• Can this issue be consistently reproduced?
  No

• Extra QA steps:
  1.
  2.
  3.

• Screenshot if needed:
  

• Any related issues:
  cc: @diracdeltas