Usage seems to be:
https://cs.chromium.org/chromium/src/components/password_manager/core/browser/http_password_store_migrator.h?rcl=5202b90d8de13309d30bbc60be18f20be19f7276&l=24

Some preconnect stuff seems to be using the underlying method as well, though some of that might be replaced by the new preconnect API....

@mattm: I noticed in your snippets that you were looking for S13n stuff, and you're an SSL expert, so this might be something to consider.

Note the API that would be added to this would be used to get net-internals working with network service.

Looks like one more owner of Profile::GetRequestContext calling into this showed up just last week :(

Anyway, if noone else is interested I may as well take this.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/85b7546763e8be89e6c0fe50ee528650bea12a89

commit 85b7546763e8be89e6c0fe50ee528650bea12a89
Author: Maks Orlovich <morlovich@chromium.org>
Date: Wed Aug 29 14:46:05 2018

Port HSTS querying to Network Service APIs

Direct access to URLRequestContext, including its
net::TransportSecurityState is going away; things should
go through NetworkContext now.

Bug:  873777 
Cq-Include-Trybots: luci.chromium.try:linux_mojo
Change-Id: Ibfb52cd027f5b417e05a35baf902ad81ba4df24b
Reviewed-on: https://chromium-review.googlesource.com/1183990
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Commit-Queue: Maks Orlovich <morlovich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#587111}
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/chrome/browser/password_manager/chrome_password_manager_client.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/chrome/browser/password_manager/chrome_password_manager_client.h
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/chrome/browser/password_manager/password_manager_test_base.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/chrome/browser/password_manager/password_store_factory.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/BUILD.gn
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/DEPS
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/hsts_query.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/hsts_query.h
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/hsts_query_unittest.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/http_password_store_migrator.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/http_password_store_migrator.h
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/http_password_store_migrator_unittest.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/password_manager_client.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/password_manager_client.h
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/password_manager_util.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/password_manager_util.h
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/components/password_manager/core/browser/password_manager_util_unittest.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/services/network/network_context.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/services/network/network_context.h
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/services/network/network_context_unittest.cc
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/services/network/public/mojom/network_context.mojom
[modify] https://crrev.com/85b7546763e8be89e6c0fe50ee528650bea12a89/services/network/test/test_network_context.h