Use FileDescriptorWatcher in base::TestLauncher.

FileDescriptorWatcher is a new API that should be used
instead of MessageLoopForIO::WatchFileDescriptor
when possible.

BUG=645114

Review-Url: https://codereview.chromium.org/2384273002
Cr-Commit-Position: refs/heads/master@{#423264}


CrOS-Libchrome-Original-Commit: c1e4fe167267b6238ee43d175aa8d594b99137ce
2 files changed
tree: 6b533e5684dd36ace61548fcd9e39f34845fdb3b
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/