Basic UkmService implementation

components/metrics/test_metrics_service_client.h

Index: components/metrics/test_metrics_service_client.h
diff --git a/components/metrics/test_metrics_service_client.h b/components/metrics/test_metrics_service_client.h
index 355e7c7c5ae361654dc45928aba5eba705f54610..d2b471f9a7f952006509df0da6b38ca2e32f6868 100644
--- a/components/metrics/test_metrics_service_client.h
+++ b/components/metrics/test_metrics_service_client.h
@@ -25,6 +25,7 @@ class TestMetricsServiceClient : public MetricsServiceClient {
 
   // MetricsServiceClient:
   metrics::MetricsService* GetMetricsService() override;
+  ukm::UkmService* GetUkmService() override;
   void SetMetricsClientId(const std::string& client_id) override;
   int32_t GetProduct() override;
   std::string GetApplicationLocale() override;
@@ -36,6 +37,8 @@ class TestMetricsServiceClient : public MetricsServiceClient {
       const base::Closure& done_callback) override;
   void CollectFinalMetricsForLog(const base::Closure& done_callback) override;
   std::unique_ptr<MetricsLogUploader> CreateUploader(
+      const std::string& server_url,
+      const std::string& mime_type,
       const base::Callback<void(int)>& on_upload_complete) override;
   base::TimeDelta GetStandardUploadInterval() override;
   bool IsReportingPolicyManaged() override;