Proof-reading comments in base/message_loop/.

This CL contains a few minor changes to comments that I made while
skimming through the code. Mostly spelling changes.

Review URL: https://codereview.chromium.org/1255673004

Cr-Commit-Position: refs/heads/master@{#340383}


CrOS-Libchrome-Original-Commit: 15926f8886b8fa20c044c02eb0387f44e611c993
6 files changed
tree: 44a51e8512d8deaf9ccc8398c5b0eff9356a9b63
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/