Change ITestClient to be similar to IChildProcessService.
Preparing the MultiprocessTestClientLauncher for transitioning to the
new base ChildProcessLauncher. More specifically, making ITestClient
similar to IChildProcessService. This requires moving extra methods to
a new interface ITestController, and creating a callback interface
ITestCallback that lets the service sets the ITestController interface
on the client.
BUG=702316
Review-Url: https://codereview.chromium.org/2781913002
Cr-Commit-Position: refs/heads/master@{#462683}
CrOS-Libchrome-Original-Commit: 9bd4d39997fab20c32cd0c7a75c45dbcf3f00642
6 files changed