[Telemetry] Introduce SummarizableValue.

tools/telemetry/telemetry/internal/results/chart_json_output_formatter_unittest.py

Index: tools/telemetry/telemetry/internal/results/chart_json_output_formatter_unittest.py
diff --git a/tools/telemetry/telemetry/internal/results/chart_json_output_formatter_unittest.py b/tools/telemetry/telemetry/internal/results/chart_json_output_formatter_unittest.py
index 27fa30257cff5491f18cbb14f9f38ab015196957..61baf615024381d10cce42e8e1044c044459a65a 100644
--- a/tools/telemetry/telemetry/internal/results/chart_json_output_formatter_unittest.py
+++ b/tools/telemetry/telemetry/internal/results/chart_json_output_formatter_unittest.py
@@ -12,6 +12,7 @@ from telemetry import story
 from telemetry.internal.results import chart_json_output_formatter
 from telemetry.internal.results import page_test_results
 from telemetry import page as page_module
+from telemetry.value import improvement_direction
 from telemetry.value import list_of_scalar_values
 from telemetry.value import scalar
 
@@ -37,7 +38,8 @@ class ChartJsonTest(unittest.TestCase):
     self._output.truncate(0)
 
     results.WillRunPage(self._story_set[0])
-    v0 = scalar.ScalarValue(results.current_page, 'foo', 'seconds', 3)
+    v0 = scalar.ScalarValue(results.current_page, 'foo', 'seconds', 3,
+                            improvement_direction=improvement_direction.DOWN)
     results.AddValue(v0)
     results.DidRunPage(self._story_set[0])
 
@@ -46,7 +48,8 @@ class ChartJsonTest(unittest.TestCase):
     self.assertIn('foo', d['charts'])
 
   def testAsChartDictSerializable(self):
-    v0 = scalar.ScalarValue(self._story_set[0], 'foo', 'seconds', 3)
+    v0 = scalar.ScalarValue(self._story_set[0], 'foo', 'seconds', 3,
+                            improvement_direction=improvement_direction.DOWN)
     page_specific_values = [v0]
     summary_values = []
 
@@ -84,8 +87,10 @@ class ChartJsonTest(unittest.TestCase):
     self.assertEquals('', d['benchmark_metadata']['description'])
 
   def testAsChartDictPageSpecificValuesSamePage(self):
-    v0 = scalar.ScalarValue(self._story_set[0], 'foo', 'seconds', 3)
-    v1 = scalar.ScalarValue(self._story_set[0], 'foo', 'seconds', 4)
+    v0 = scalar.ScalarValue(self._story_set[0], 'foo', 'seconds', 3,
+                            improvement_direction=improvement_direction.DOWN)
+    v1 = scalar.ScalarValue(self._story_set[0], 'foo', 'seconds', 4,
+                            improvement_direction=improvement_direction.DOWN)
     page_specific_values = [v0, v1]
     summary_values = []
 
@@ -98,8 +103,10 @@ class ChartJsonTest(unittest.TestCase):
     self.assertTrue('http://www.foo.com/' in d['charts']['foo'])
 
   def testAsChartDictPageSpecificValuesAndComputedSummaryWithTraceName(self):
-    v0 = scalar.ScalarValue(self._story_set[0], 'foo.bar', 'seconds', 3)
-    v1 = scalar.ScalarValue(self._story_set[1], 'foo.bar', 'seconds', 4)
+    v0 = scalar.ScalarValue(self._story_set[0], 'foo.bar', 'seconds', 3,
+                            improvement_direction=improvement_direction.DOWN)
+    v1 = scalar.ScalarValue(self._story_set[1], 'foo.bar', 'seconds', 4,
+                            improvement_direction=improvement_direction.DOWN)
     page_specific_values = [v0, v1]
     summary_values = []
 
@@ -114,8 +121,10 @@ class ChartJsonTest(unittest.TestCase):
     self.assertTrue('bar' in d['charts']['foo'])
 
   def testAsChartDictPageSpecificValuesAndComputedSummaryWithoutTraceName(self):
-    v0 = scalar.ScalarValue(self._story_set[0], 'foo', 'seconds', 3)
-    v1 = scalar.ScalarValue(self._story_set[1], 'foo', 'seconds', 4)
+    v0 = scalar.ScalarValue(self._story_set[0], 'foo', 'seconds', 3,
+                            improvement_direction=improvement_direction.DOWN)
+    v1 = scalar.ScalarValue(self._story_set[1], 'foo', 'seconds', 4,
+                            improvement_direction=improvement_direction.DOWN)
     page_specific_values = [v0, v1]
     summary_values = []
 
@@ -130,8 +139,9 @@ class ChartJsonTest(unittest.TestCase):
     self.assertTrue('summary' in d['charts']['foo'])
 
   def testAsChartDictSummaryValueWithTraceName(self):
-    v0 = list_of_scalar_values.ListOfScalarValues(None, 'foo.bar', 'seconds',
-        [3, 4])
+    v0 = list_of_scalar_values.ListOfScalarValues(
+        None, 'foo.bar', 'seconds', [3, 4],
+        improvement_direction=improvement_direction.DOWN)
     page_specific_values = []
     summary_values = [v0]
 
@@ -143,8 +153,9 @@ class ChartJsonTest(unittest.TestCase):
     self.assertTrue('bar' in d['charts']['foo'])
 
   def testAsChartDictSummaryValueWithoutTraceName(self):
-    v0 = list_of_scalar_values.ListOfScalarValues(None, 'foo', 'seconds',
-        [3, 4])
+    v0 = list_of_scalar_values.ListOfScalarValues(
+        None, 'foo', 'seconds', [3, 4],
+        improvement_direction=improvement_direction.DOWN)
     page_specific_values = []
     summary_values = [v0]
 
@@ -156,8 +167,9 @@ class ChartJsonTest(unittest.TestCase):
     self.assertTrue('summary' in d['charts']['foo'])
 
   def testAsChartDictValueSmokeTest(self):
-    v0 = list_of_scalar_values.ListOfScalarValues(None, 'foo.bar', 'seconds',
-        [3, 4])
+    v0 = list_of_scalar_values.ListOfScalarValues(
+        None, 'foo.bar', 'seconds', [3, 4],
+        improvement_direction=improvement_direction.DOWN)
     page_specific_values = []
     summary_values = [v0]