Add a new function for getting a deterministic machine ID

chrome/browser/prefs/tracked/device_id_stub.cc

Index: chrome/browser/prefs/tracked/device_id_stub.cc
diff --git a/chrome/browser/prefs/tracked/device_id_stub.cc b/chrome/browser/prefs/tracked/device_id_stub.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7402f827f677e1313f7b081f0f3efeefc8648cf0
--- /dev/null
+++ b/chrome/browser/prefs/tracked/device_id_stub.cc
@@ -0,0 +1,10 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/prefs/tracked/device_id.h"
+
+MachineIdStatus GetDeterministicMachineSpecificId(std::string* machine_id) {
+  DCHECK(machine_id);

[grt (UTC plus 2), 2015/01/27 21:08:45]

#include "base/logging.h" for this

[alito, 2015/01/29 23:25:48]

Done.

+  return MachineIdStatus::NOT_IMPLEMENTED;
+}