Add initial Controller to DownloadService

components/download/internal/stats.cc

+// Copyright 2017 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 "components/download/internal/stats.h"
+
+#include "components/download/internal/startup_status.h"
+
+namespace download {
+namespace stats {
+
+void LogControllerStartupStatus(const StartupStatus& status) {
+  DCHECK(status.Complete());
+
+  // TODO(dtrainor): Log each failure reason.
+  // TODO(dtrainor): Finally, log SUCCESS or FAILURE based on status.Ok().
+}
+
+void LogServiceApiAction(DownloadClient client, ServiceApiAction action) {
+  // TODO(dtrainor): Log |action| for |client|.
+}
+
+void LogStartDownloadResult(DownloadClient client,
+                            DownloadParams::StartResult result) {
+  // TODO(dtrainor): Log |result| for |client|.
+}
+
+void LogModelOperationResult(ModelAction action, bool success) {
+  // TODO(dtrainor): Log |action|.
+}
+
+}  // namespace stats
+}  // namespace download