[s13n] Add IdentityTestEnvironment{Profile,BrowserState}Adaptor::CreateXXX variant that takes a Builder

In follow ups, users of the existing APIs can be converted.

BUG=904419

Change-Id: I6691fb32ec79d5de5c97c09bb886bf3d6bc2c047
Reviewed-on: https://chromium-review.googlesource.com/c/1332749
Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Cr-Commit-Position: refs/heads/master@{#607572}
4 files changed