UKM Sync Observer

components/metrics/metrics_service_client.cc

Index: components/metrics/metrics_service_client.cc
diff --git a/components/metrics/metrics_service_client.cc b/components/metrics/metrics_service_client.cc
index 0d955920005d6ca645ef610b20fcbf40a3ff6e58..5b6427734dbe823091255718bb53f8b9c05e1c1f 100644
--- a/components/metrics/metrics_service_client.cc
+++ b/components/metrics/metrics_service_client.cc
@@ -8,6 +8,10 @@
 
 namespace metrics {
 
+MetricsServiceClient::MetricsServiceClient() : update_running_services_() {}
+
+MetricsServiceClient::~MetricsServiceClient() {}
+
 ukm::UkmService* MetricsServiceClient::GetUkmService() {
   return nullptr;
 }
@@ -32,4 +36,18 @@ std::string MetricsServiceClient::GetMetricsServerUrl() {
   return metrics::kDefaultMetricsServerUrl;
 }
 
+bool MetricsServiceClient::IsHistorySyncEnabledOnAllProfiles() {
+  return false;
+}
+
+void MetricsServiceClient::SetUpdateRunningServicesCallback(
+    const base::Closure& callback) {
+  update_running_services_ = callback;
+}
+
+void MetricsServiceClient::UpdateRunningServices() {
+  if (update_running_services_)
+    update_running_services_.Run();
+}
+
 }  // namespace metrics