Import relevant settings from Brave Payments

[davidtemkin]

Test plan

See brave/brave-core#736

Description

When a user is being upgraded from Muon/Brave Payments to Brave Core/Brave Rewards, the following settings should be carried over:

• Minimum page time before logging a visit
• Minimum visits for publisher relevancy
• Allow contributions to non-verified sites
• Allow contributions to videos

In the event of automatic/silent upgrade, all of these items should be automatically imported.

In the event of a manual import, following a manual download/install of Brave Core, these items should be imported whenever a user decides to import "Brave Payments data" (an option on the list that includes bookmarks, cookies, passwords, etc).

This is in addition to the import of the following items, covered elsewhere:

• Wallet (this includes Grants; attached to wallet by way of server query)
• Pinned sites*
• Monthly Budget*
• Excluded sites

*pinned sites and monthly budget import are tied together. See #1910, specifically @jenn-rhim 's comment , for details.

[bsclifton]

Fixed with brave/brave-core#736

Not verifiable via the UI unfortunately because of #2265

[btlechowski]

Verification Passed on

Brave	0.57.17 Chromium: 71.0.3578.80 (Official Build) (64-bit)
Revision	2ac50e7249fbd55e6f517a28131605c9fb9fe897-refs/branch-heads/3578@{#860}
OS	Windows 7

Used STR from brave/brave-core#736
Also imported using --upgrade-from-muon flag

Verified import is canceled when Brave Payments in b-l are turned off
Verified that following settings were imported:

• Minimum page time before logging a visit
• Minimum visits for publisher relevancy
• Allow contributions to non-verified sites
• Allow contributions to videos
• Wallet (this includes Grants; attached to wallet by way of server query) Checked addresses in UI and ledger_state
• Monthly Budget
• Pinned sites (Tips)
• Turning auto-contribute on/off based on ledger table and pinned sites

Verified passed on

Brave	0.57.18 Chromium: 71.0.3578.80 (Official Build) (64-bit)
Revision	2ac50e7249fbd55e6f517a28131605c9fb9fe897-refs/branch-heads/3578@{#860}
OS	Mac OS X

• Verified test plan in Import Brave Payments data from Muon brave-core#736
• Verified all settings imported as expected.

Verification passed on

Brave	0.57.18 Chromium: 71.0.3578.80 (Official Build) (64-bit)
Revision	2ac50e7249fbd55e6f517a28131605c9fb9fe897-refs/branch-heads/3578@{#860}
OS	Linux

• Verified test plan in Import Brave Payments data from Muon brave-core#736
• Verified all settings imported as expected.