Rename the laptop-updates.brave.com endpoint

[fmarier]

Historically, that endpoint was used for browser updates (in the Muon days). Then the stats / referral ping was added to it as a secondary use.

Now that Muon updates are no longer sent to these old clients, this endpoint is primarily for stats. We should rename it so that the name reflects the nature of the traffic.

Historical uses:

• Muon browser updates (brave-core uses updates.bravesoftware.com and updates-cdn.bravesoftware.com)
• crash reporting (now using backtrace.io)
• list of sites to send a deprecated X-Brave-Partner header to
• webcompat feedback form submissions (now on webcompat.brave.com)

Current uses:

• usage pings on all platforms (includes referral code for the first 90 days if any)
• referral pings when applicable (at first run, and then intermittently until 30 days later when it stops)
• Windows installation events (where things failed during install)
• feedback submissions from Android users who rate the app

[fmarier]

Here's a concrete suggestion:

• metrics.brave.com for usage pings, referral pings, and installation events
• feedback.brave.com for webcompat and android feedback

Leave partner headers on laptop-updates for now and work towards removing that mechanism entirely.

[fmarier]

Leave partner headers on laptop-updates for now and work towards removing that mechanism entirely.

@diracdeltas has a better interim solution for this: remove the /promo/custom-headers endpoint and have this list be hard-coded into brave-core until we can remove it entirely. We're not supposed to be adding to it and so it doesn't need to be updatable outside of the regular release trains. I filed #16455 for this.

[fmarier]

As part of using the new hostnames, we should add metrics.brave.com to https://github.com/brave/brave-core/blob/90859949913c21320e646f2d4f92609a0a401d64/chromium_src/net/tools/transport_security_state_generator/input_file_parsers.cc#L409 and feedback.brave.com to https://github.com/brave/brave-core/blob/90859949913c21320e646f2d4f92609a0a401d64/chromium_src/net/tools/transport_security_state_generator/input_file_parsers.cc#L423 so that they are pinned in some way.

[fmarier]

metrics.brave.com and feedback.brave.com were added in https://github.com/brave/devops/pull/6699.