Pass MetricsServiceClient into MetricsService, and create a simple stubbed TestMetricsServiceClient…

components/metrics/test_metrics_service_client.cc

Index: components/metrics/test_metrics_service_client.cc
diff --git a/components/metrics/test_metrics_service_client.cc b/components/metrics/test_metrics_service_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..577db281b2452bd27dac476a3c31d63810467af5
--- /dev/null
+++ b/components/metrics/test_metrics_service_client.cc
@@ -0,0 +1,40 @@
+// Copyright 2014 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/metrics/test_metrics_service_client.h"
+
+namespace metrics {
+
+TestMetricsServiceClient::TestMetricsServiceClient() {
+}
+
+TestMetricsServiceClient::~TestMetricsServiceClient() {
+}
+
+void TestMetricsServiceClient::SetClientID(const std::string& client_id) {
+  client_id_ = client_id;
+}
+
+bool TestMetricsServiceClient::IsOffTheRecordSessionActive() {
+  return false;
+}
+
+std::string TestMetricsServiceClient::GetApplicationLocale() {
+  return "en-US";
+}
+
+bool TestMetricsServiceClient::GetBrand(std::string* brand_code) {
+  *brand_code = "BRAND_CODE";
+  return true;
+}
+
+SystemProfileProto::Channel TestMetricsServiceClient::GetChannel() {
+  return SystemProfileProto::CHANNEL_BETA;
+}
+
+std::string TestMetricsServiceClient::GetVersionString() {
+  return "5.0.322.0-64-devel";
+}
+
+}  // namespace metrics