Remove remaining use of the deprecated MessageLoopProxy

This patch removes the remaining usage of MessageLoopProxy outside
base/. Note that there are still some call sites for
Thread::message_loop_proxy() and MessageLoop::message_loop_proxy() which
will be cleaned up separately.

BUG=465354

Review URL: https://codereview.chromium.org/1169923009

Cr-Commit-Position: refs/heads/master@{#334198}


CrOS-Libchrome-Original-Commit: a3899866682a1e846fc978368b00531a0e21d266
4 files changed
tree: 8b197ccf147c67088552aeb6b1f638c03f5d6094
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/