Add support for logging additional metrics in UKM.

components/ukm/ukm_service_unittest.cc

 // Copyright 2017 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/ukm/ukm_service.h"
 
 #include <string>
 #include <utility>
 
 #include "base/test/test_simple_task_runner.h"
@@ skipping 45 matching lines @@
     EXPECT_TRUE(compression::GzipUncompress(result_persisted_logs.staged_log(),
                                             &uncompressed_log_data));
 
     Report report;
     EXPECT_TRUE(report.ParseFromString(uncompressed_log_data));
     return report;
   }
 
   std::unique_ptr<UkmSource> MakeSource(std::string url, int paint_msec) {
     auto source = base::MakeUnique<UkmSource>();
-    source->set_committed_url(GURL(url));
+    source->set_url(GURL(url));
     source->set_first_contentful_paint(
         base::TimeDelta::FromMilliseconds(paint_msec));
     return source;
   }
 
  protected:
   TestingPrefServiceSimple prefs_;
   metrics::TestMetricsServiceClient client_;
 
   scoped_refptr<base::TestSimpleTaskRunner> task_runner_;
@@ skipping 105 matching lines @@
   // Includes a Source, so will persist.
   service.Flush();
   EXPECT_EQ(GetPersistedLogCount(), 1);
 
   // Current log has no Sources.
   service.Flush();
   EXPECT_EQ(GetPersistedLogCount(), 1);
 }
 
 }  // namespace ukm