Always use ChannelMojo for content child processes.

All content child processes now use ChannelMojo. This removes the option
to not use ChannelMojo.

BUG=604282

Review-Url: https://codereview.chromium.org/2389193004
Cr-Commit-Position: refs/heads/master@{#423375}


CrOS-Libchrome-Original-Commit: 75ce65c46a94b3fa6336e43a7ca56040537db626
4 files changed
tree: 269d7d676ec8a6f49bf1928d4e9a15dba73d2d15
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/