promoCode is not claimed after going offline during installation

[btlechowski]

Steps to Reproduce

1. (Important) Uninstall Brave Browser with User Data to have a Clean install
   
2. (On Windows )Download stub/mini installer and rename it to BraveBrowserSetup-KAM253.exe
3. Run the stub/mini installer
4. During installation go offline
   
5. After Brave is launched by installer, wait 60 seconds
6. Go online and wait another 60 seconds
7. Check if promoCode file exists
8. Check Local State file for promo_code

Note: promoCode and Local State files are located in AppData\Local\BraveSoftware\Brave-Browser\User Data\ on Windows

Actual result:

promoCode is not claimed
promo_code is not added to Local State

IMPORTANT: Combined with #1811 the promoCode will never be claimed.

Expected result:

promoCode is claimed
promo_code is added to Local State

Reproduces how often:

always

Brave version (brave://version info)

Brave	0.55.20 Chromium: 70.0.3538.67 (Official Build) (64-bit)
Revision	9ab0cfab84ded083718d3a4ff830726efd38869f-refs/branch-heads/3538@{#1002}
OS	Windows 7 x64

@kjozwiak Can you check on Mac?
cc @srirambv @LaurenWags @GeetaSarvadnya @emerick

[emerick]

The problem is that our attempt to contact the referral server will fail when you're offline. Once #1811 is fixed, this should no longer be a problem (although you would need to restart Brave after coming back online, as we only make the referral check at startup).

[emerick]

Closing now that #1811 is merged. @btlechowski please let me know how it looks now (see above comment).

[GeetaSarvadnya]

Verification passed on:

Brave	0.57.3 Chromium: 70.0.3538.67 (Official Build) dev (64-bit)
Revision	9ab0cfab84ded083718d3a4ff830726efd38869f-refs/branch-heads/3538@{#1002}
OS	Windows

Local state file:

Build id and promo code added in Local state file after online:
download_id":"62a46706-a125-48f4-a916-0edab830b7c8","promo_code":"sge733"