Revert of ipc: Add a new field num_brokered_attachments to the message header. (patchset #1 id:1 of https://codereview.chromium.org/1311673011/ )

Reason for revert:
Causes crashes on Canary:
https://code.google.com/p/chromium/issues/detail?id=524032

Original issue's description:
> ipc: Add a new field num_brokered_attachments to the message header.
>
> BUG=493414
>
> Committed: https://crrev.com/9e3e945e56139cf34634dc21ad25a67fc5507590
> Cr-Commit-Position: refs/heads/master@{#346426}

TBR=tsepez@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=493414

Review URL: https://codereview.chromium.org/1326703002

Cr-Commit-Position: refs/heads/master@{#346692}


CrOS-Libchrome-Original-Commit: 01eb81a73adc66c3e8a5385ec6aed81a93450940
2 files changed
tree: bcad3a03a494795ccf120b17329149dce1b3d424
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/