Change UMA proto product field to be an int32.

chromecast/metrics/cast_metrics_service_client.cc

Index: chromecast/metrics/cast_metrics_service_client.cc
diff --git a/chromecast/metrics/cast_metrics_service_client.cc b/chromecast/metrics/cast_metrics_service_client.cc
index 637cd400b864e484b3300b51d33eb69ce8076ce2..75e744d455eb96775d8bd826fdb4768342fe6a12 100644
--- a/chromecast/metrics/cast_metrics_service_client.cc
+++ b/chromecast/metrics/cast_metrics_service_client.cc
@@ -54,6 +54,11 @@ bool CastMetricsServiceClient::IsOffTheRecordSessionActive() {
   return false;
 }
 
+int32_t CastMetricsServiceClient::GetProduct() {
+  // Chromecast currently uses the same product identifier as Chrome.
+  return metrics::ChromeUserMetricsExtension::CHROME;
+}
+
 std::string CastMetricsServiceClient::GetApplicationLocale() {
   return base::i18n::GetConfiguredLocale();
 }