Add support for attaching filters to an IPC TestSink.

The filters can see every message that is sent to the sink, which is useful
when if the test is waiting for a specific message to arrive.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6387007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@73194 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: 9f9db89fe9a1b4e82ab3cfa25b579f8b46fe389e
2 files changed
tree: 57e0219e42b70647eb291c6bf52cb85433611889
  1. base/
  2. build/
  3. ipc/
  4. testing/