Added support for improvement_direction to relevant values, which is propogated to chartjson.

tools/telemetry/telemetry/results/json_output_formatter_unittest.py

Index: tools/telemetry/telemetry/results/json_output_formatter_unittest.py
diff --git a/tools/telemetry/telemetry/results/json_output_formatter_unittest.py b/tools/telemetry/telemetry/results/json_output_formatter_unittest.py
index 5b6bebdd6e160815a0f6074a5dbd464858ad1bad..8d2e7730399d1a68baf4f785294a1e706a378569 100644
--- a/tools/telemetry/telemetry/results/json_output_formatter_unittest.py
+++ b/tools/telemetry/telemetry/results/json_output_formatter_unittest.py
@@ -13,6 +13,7 @@ from telemetry import page as page_module
 from telemetry.page import page_set
 from telemetry.results import json_output_formatter
 from telemetry.results import page_test_results
+from telemetry.value import improvement_direction
 from telemetry.value import scalar
 from telemetry.value import trace
 from telemetry.timeline import trace_data
@@ -44,7 +45,8 @@ class JsonOutputFormatterTest(unittest.TestCase):
     self._output.truncate(0)
 
     results.WillRunPage(self._page_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._page_set[0])
 
@@ -62,7 +64,8 @@ class JsonOutputFormatterTest(unittest.TestCase):
   def testAsDictWithOnePage(self):
     results = page_test_results.PageTestResults()
     results.WillRunPage(self._page_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._page_set[0])
 
@@ -100,12 +103,14 @@ class JsonOutputFormatterTest(unittest.TestCase):
   def testAsDictWithTwoPages(self):
     results = page_test_results.PageTestResults()
     results.WillRunPage(self._page_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._page_set[0])
 
     results.WillRunPage(self._page_set[1])
-    v1 = scalar.ScalarValue(results.current_page, 'bar', 'seconds', 4)
+    v1 = scalar.ScalarValue(results.current_page, 'bar', 'seconds', 4,
+                            improvement_direction=improvement_direction.DOWN)
     results.AddValue(v1)
     results.DidRunPage(self._page_set[1])
 
@@ -119,7 +124,8 @@ class JsonOutputFormatterTest(unittest.TestCase):
 
   def testAsDictWithSummaryValueOnly(self):
     results = page_test_results.PageTestResults()
-    v = scalar.ScalarValue(None, 'baz', 'seconds', 5)
+    v = scalar.ScalarValue(None, 'baz', 'seconds', 5,
+                           improvement_direction=improvement_direction.DOWN)
     results.AddSummaryValue(v)
 
     d = json_output_formatter.ResultsAsDict(results,