Reset sync should show warning message to user, if sync is already established between two devices

[GeetaSarvadnya]

Description

Reset sync should show warning message to user, if sync is already established between two devices

Steps to Reproduce

1. Launch brave beta with --enable-brave-sync flag
2. Sync two devices and make sure sync is established b/n 2 devices (Bookmarks are imported and
   synced between two devices)
3. Click on Reset sync on Device1
4. Observe that there is no warning message displayed

Actual result:

Click on Reset Sync is not showing any waring message

Expected result:

Click on Reset sync should show warning message to user, if sync is already established b/n devices

Reproduces how often:

Easily

Brave version (brave://version info)

Brave	0.57.6 Chromium: 71.0.3578.31 (Official Build) beta (64-bit)
Revision	c88fdf2a4ce19a713615ca4fbde7a0d0b5fe2363-refs/branch-heads/3578@{#427}
OS	Windows

Reproducible on current release:

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

Website problems only:

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

Additional Information

@kjozwiak @LaurenWags @srirambv @btlechowski

[cezaraugusto]

fixed by brave/brave-core#917

[GeetaSarvadnya]

Verification Passed on

Brave	0.57.7 Chromium: 71.0.3578.53 (Official Build) beta (64-bit)
Revision	599fb72e740eab9d10609f1ed28a2ad669f82c1a-refs/branch-heads/3578@{#669}
OS	Windows

Verified passed with

Brave	0.57.7 Chromium: 71.0.3578.53 (Official Build) beta(64-bit)
Revision	599fb72e740eab9d10609f1ed28a2ad669f82c1a-refs/branch-heads/3578@{#669}
OS	Mac OS X

• Verified STR from description, Cancel button closes warning and does not reset Sync. OK button closes warning and does reset sync.
  

Verification Passed on

Brave	0.57.7 Chromium: 71.0.3578.53 (Official Build) beta (64-bit)
Revision	599fb72e740eab9d10609f1ed28a2ad669f82c1a-refs/branch-heads/3578@{#669}
OS	Linux

[srirambv]

Removed QA pass label. Need to verify it against beta again

[GeetaSarvadnya]

Verification Passed on

Brave	0.57.12 Chromium: 71.0.3578.75 (Official Build) (64-bit)
Revision	06ef00b5279f93f8e0c1e73acedd49d7dcc09767-refs/branch-heads/3578@{#836}
OS	Windows

Verification passed on

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

Verified passed with

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