Add task runner accessor in RefCountedDeleteOnSequence.

This means classes that need to access that task runner don't have to have a
duplicate scoped_refptr to point to it.

BUG=none
TEST=none

Change-Id: I6cd9eca47212da60905551a71f5be2c0ee25e47e
Reviewed-on: https://chromium-review.googlesource.com/930369
Reviewed-by: Mathieu Perreault <mathp@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Reviewed-by: Gabriel Charette <gab@chromium.org>
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#538664}

CrOS-Libchrome-Original-Commit: b8b061aeb3c4f829582df4730fa51d40f9282210
2 files changed
tree: 5183586d9eb7e15548c0af5b37fb27e25f2b30ba
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/