Mojo: Fix scrambled message ID build conditions

This corrects the condition used to enable scrambled message
IDs, ensuring that they are only enabled on Windows, Mac, and
Linux desktop builds, and NOT on Chrome OS.

Bug: 673417,771444

TBR=yzshen@chromium.org

Change-Id: I6018e22f31e91b362ca2ff3b5801dd98a5cefc15
Reviewed-on: https://chromium-review.googlesource.com/699854
Commit-Queue: Ken Rockot <rockot@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506321}

CrOS-Libchrome-Original-Commit: aeaffa769748b7c3118cf06aef16b667a725f5d7
1 file changed
tree: 1d6f73470e6e73aca35887889eb031b9070c5591
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/