Change UMA proto product field to be an int32.

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
index e5e97780ec0fad9d4688c0198397ff70908363b1..c60db0b151bbc75be86c5564e0ed68453454e9bb 100644
--- a/components/metrics/test_metrics_service_client.cc
+++ b/components/metrics/test_metrics_service_client.cc
@@ -6,6 +6,7 @@
 
 #include "base/callback.h"
 #include "components/metrics/metrics_log_uploader.h"
+#include "components/metrics/proto/chrome_user_metrics_extension.pb.h"
 
 namespace metrics {
 
@@ -13,7 +14,8 @@ namespace metrics {
 const char TestMetricsServiceClient::kBrandForTesting[] = "brand_for_testing";
 
 TestMetricsServiceClient::TestMetricsServiceClient()
-    : version_string_("5.0.322.0-64-devel") {
+    : version_string_("5.0.322.0-64-devel"),
+      product_(ChromeUserMetricsExtension::CHROME) {
 }
 
 TestMetricsServiceClient::~TestMetricsServiceClient() {
@@ -28,6 +30,10 @@ bool TestMetricsServiceClient::IsOffTheRecordSessionActive() {
   return false;
 }
 
+int32_t TestMetricsServiceClient::GetProduct() {
+  return product_;
+}
+
 std::string TestMetricsServiceClient::GetApplicationLocale() {
   return "en-US";
 }