[Android] Add logging of active device_forwarders

When a forwarder fails to be created, it currently attempts to kill
device_forwarder on the device. This adds logging after the kill
attempt occurs so we can confirm that the device_forwarder is killed.

BUG=520958

Review URL: https://codereview.chromium.org/1316803002

Cr-Commit-Position: refs/heads/master@{#345607}


CrOS-Libchrome-Original-Commit: a32d6c654bacc903b179ade49ded6cba1a7c4443
1 file changed
tree: 40af6b4a4ce0d97b3cfa0d08ac996e388a63ab96
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/