Remove task_runner from audio_input_device, as the ipc object is threadsafe now

Bug: chromium:672469
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I1e24e99df4a6d9dc0480aeb460115bafdceeafd5
Reviewed-on: https://chromium-review.googlesource.com/1018475
Commit-Queue: Jonas Olsson <jonasolsson@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Max Morin <maxmorin@chromium.org>
Reviewed-by: Olga Sharonova <olka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553499}

CrOS-Libchrome-Original-Commit: 85caabcce4bf8019531c514aa29b5c8224aed266
1 file changed
tree: c61ead5a691165680fc7529b964a83c208dd500a
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/