[Telemetry] Fix kraken result value type from r281894.

tools/perf/benchmarks/kraken.py

Index: tools/perf/benchmarks/kraken.py
diff --git a/tools/perf/benchmarks/kraken.py b/tools/perf/benchmarks/kraken.py
index b7addf650531bb88f914b4bc2cb7d538981391dc..8b4559ed924c78863a46c73a2708ca7713599d54 100644
--- a/tools/perf/benchmarks/kraken.py
+++ b/tools/perf/benchmarks/kraken.py
@@ -10,6 +10,7 @@ from metrics import power
 from telemetry import benchmark
 from telemetry.page import page_measurement
 from telemetry.page import page_set
+from telemetry.value import list_of_scalar_values
 from telemetry.value import scalar
 
 
@@ -48,9 +49,12 @@ decodeURIComponent(formElement.value.split("?")[1]);
     for key in result_dict:
       if key == 'v':
         continue
-      results.AddValue(scalar.ScalarValue(
+      results.AddValue(list_of_scalar_values.ListOfScalarValues(
           results.current_page, key, 'ms', result_dict[key], important=False))
       total += _Mean(result_dict[key])
+
+    # TODO(tonyg/nednguyen): This measurement shouldn't calculate Total. The
+    # results system should do that for us.
     results.AddValue(scalar.ScalarValue(
         results.current_page, 'Total', 'ms', total))