Revert of Adds some CHECKs to MessagePumpMojo (https://codereview.chromium.org/454433003/)

Reason for revert:
Speculative revert, attempting to diagnose timing out Blink layout tests on Windows.

Original issue's description:
> Adds some CHECKs to MessagePumpMojo
> 
> The thread watcher appears to be kicking on when we're trying to
> remove a handle. Not sure why. This converts some DCHECKs to CHECKs
> and fixes handling of the deadline. I suspect none of this will help,
> but it's worth a shot.
> 
> BUG=399769
> TEST=none
> R=darin@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=288949

TBR=darin@chromium.org,sky@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=399769

Review URL: https://codereview.chromium.org/461133002

Cr-Commit-Position: refs/heads/master@{#289057}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289057 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: b28216c9fdf2441eda879e728ea12faf0e663c68
4 files changed
tree: a5a5932953b1742c553e6a2db5c5460154bf83d3
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/