chromium: add recommendation of disabling Brave rewards & wallet

etc/opt/chromium/policies/recommended/README.md

@@ -9,6 +9,7 @@
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 
 - [`brave-search.json`](#brave-searchjson)
+- [`disable-brave-rewards-wallet.json`](#disable-brave-rewards-walletjson)
 - [`duckduckgo.json`](#duckduckgojson)
 - [`enable-home.json`](#enable-homejson)
 - [`README.md`](#readmemd)
@@ -22,6 +23,11 @@
 
 Sets and displays recommendation on the use of search.brave.com as a search engine by default.
 
+## `disable-brave-rewards-wallet.json`
+
+Disables Brave rewards and wallet by default while allowing the user to enable
+it regardless of the prompt that organization recommends them disabled.
+
 ## `duckduckgo.json`
 
 Sets and displays recommendation on the use of start.duckduckgo.com as a search engine by default.

etc/opt/chromium/policies/recommended/disable-brave-rewards-wallet.json

@@ -0,0 +1,4 @@
+{
+  "BraveRewardsDisabled": true,
+  "BraveWalletDisabled": true
+}