Remove IPC::Channel::TakePipeHandle()

It doesn't work, and it is no longer used.

BUG=416208
R=cpu@chromium.org, jam@chromium.org

Review URL: https://codereview.chromium.org/601563002

Cr-Commit-Position: refs/heads/master@{#296820}


CrOS-Libchrome-Original-Commit: cfdd7ba3cf8658df5a5484b716a1dc48ce3e0674
7 files changed
tree: 2b28ac90d4b2b1cac0075c56af59b1abae9b9ff4
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/