Move bluetooth API tests to //c/b/e/api/blueooth

These two tests rely on //chrome components, in particular
extension_apitest.cc. We no longer want to try to migrate
these tests to extensions_browsertests, as those are based
on app_shell. We don't want to bring up app_shell on desktop
Android. Also, running tests under app_shell is not the best
representation of how the API performs in chrome. So move the
tests into //chrome and add them to browser_tests. Keep them
both the same /api/bluetooth/ directory, as that's how they
were structured before.

Bug: 40425056
Change-Id: If0ef98e07bff98e50fbbc1207c3e3775de19b003
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6789390
Reviewed-by: Devlin Cronin <rdevlin.cronin@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1493043}