IPC::Channel: Reduce POSIX specific API surface

ipc/ipc_test_sink.cc

Index: ipc/ipc_test_sink.cc
diff --git a/ipc/ipc_test_sink.cc b/ipc/ipc_test_sink.cc
index 65951fb621f6bd12bc21fc26d21e67f3ab5e0dd8..9e9d1fd3c2445191f4eb6e3840e7adf93a1b8f96 100644
--- a/ipc/ipc_test_sink.cc
+++ b/ipc/ipc_test_sink.cc
@@ -101,25 +101,6 @@ int TestSink::TakeClientFileDescriptor() {
   return -1;
 }
 
-bool TestSink::AcceptsConnections() const {
-  NOTREACHED();
-  return false;
-}
-
-bool TestSink::HasAcceptedConnection() const {
-  NOTREACHED();
-  return false;
-}
-
-bool TestSink::GetPeerEuid(uid_t* peer_euid) const {
-  NOTREACHED();
-  return false;
-}
-
-void TestSink::ResetToAcceptingConnectionState() {
-  NOTREACHED();
-}
-
 #endif  // defined(OS_POSIX) && !defined(OS_NACL)
 
 }  // namespace IPC