tree 9bd6d30b0662944c7f4c4c0ef2fadb33097a8b15
parent 36b8b4be56c78a8991d6d120cbcf85ff2e18a37e
author Arman Uguray <armansito@google.com> 1558663509 +0000
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1558663509 +0000

[bt] bt-emulator library abstraction (Part 1)

- The FakeHciDevice type from the fuchsia-bluetooth crate now connects
  to a bt-emulator device and provides a proxy to its HciEmulator FIDL
  implementation.
- The bt-fake-hci driver binding and test device management logic has
  been moved to fake_hci.rs. Old copies in hci.rs will be removed once
  all users go through FakeHciDevice.
- Added a unit test for device creation.
- Fixed a number of bugs in the bt-host driver's shut-down logic that
  were surfaced by the new unit test:
  * Fixed deadlocks triggered by DDK "unbind" received while a
    gap::Adapter is initializing.
  * Fixed use-after-free when the clean up functions are called multiple
    times.
   * Added a unit test for calling gap::Adapter::ShutDown() before
     gap::Adapter::Initialize() has returned, to enforce the latter's
     "abort" contract.

Bug: BT-229
Test: 1. bt-host-unittests --gtest_filter=GAP_AdapterTest.*
      2. bt-integration-tests
      3. bluetooth-crate-unittests
Change-Id: I9d58e2542792151897ae76b720df1119ed3dc6b3