[Telemetry] Update the ConfindenceInterval calculation in results.html to use

tools/telemetry/telemetry/internal/results/html_output_formatter_unittest.py

Index: tools/telemetry/telemetry/internal/results/html_output_formatter_unittest.py
diff --git a/tools/telemetry/telemetry/internal/results/html_output_formatter_unittest.py b/tools/telemetry/telemetry/internal/results/html_output_formatter_unittest.py
index 178dfd60ac0905a1feca5eb22756786a436d6e40..5ea8f5ba579c43fa5f26c31e5ab3cc55e2ff9c62 100644
--- a/tools/telemetry/telemetry/internal/results/html_output_formatter_unittest.py
+++ b/tools/telemetry/telemetry/internal/results/html_output_formatter_unittest.py
@@ -78,6 +78,7 @@ class HtmlOutputFormatterTest(unittest.TestCase):
           "metrics": {
             "a": {
               "current": [3, 7],
+              "std": 2.8284271247461903,
               "units": "seconds",
               "important": True
             },
@@ -88,11 +89,13 @@ class HtmlOutputFormatterTest(unittest.TestCase):
             },
             "a.http://www.bar.com/": {
               "current": [7],
+              "std": 0.0,
               "units": "seconds",
               "important": False
             },
             "a.http://www.foo.com/": {
               "current": [3],
+              "std": 0.0,
               "units": "seconds",
               "important": False
             }
@@ -131,6 +134,7 @@ class HtmlOutputFormatterTest(unittest.TestCase):
               "a": {
                 "current": [3, 7],
                 "units": "seconds",
+                "std": 2.8284271247461903,
                 "important": True
               },
               "telemetry_page_measurement_results.num_failed": {
@@ -140,11 +144,13 @@ class HtmlOutputFormatterTest(unittest.TestCase):
               },
               "a.http://www.bar.com/": {
                 "current": [7],
+                "std": 0.0,
                 "units": "seconds",
                 "important": False
               },
               "a.http://www.foo.com/": {
                 "current": [3],
+                "std": 0.0,
                 "units": "seconds",
                 "important": False
               }
@@ -161,6 +167,7 @@ class HtmlOutputFormatterTest(unittest.TestCase):
             "metrics": {
               "a": {
                 "current": [4, 8],
+                'std': 2.8284271247461903,
                 "units": "seconds",
                 "important": True
               },
@@ -171,11 +178,13 @@ class HtmlOutputFormatterTest(unittest.TestCase):
               },
               "a.http://www.bar.com/": {
                 "current": [8],
+                "std": 0.0,
                 "units": "seconds",
                 "important": False
               },
               "a.http://www.foo.com/": {
                 "current": [4],
+                "std": 0.0,
                 "units": "seconds",
                 "important": False
               }
@@ -213,6 +222,7 @@ class HtmlOutputFormatterTest(unittest.TestCase):
           "metrics": {
             "a": {
               "current": [5, 9],
+              'std': 2.8284271247461903,
               "units": "seconds",
               "important": True
             },
@@ -223,11 +233,13 @@ class HtmlOutputFormatterTest(unittest.TestCase):
             },
             "a.http://www.bar.com/": {
               "current": [9],
+              "std": 0.0,
               "units": "seconds",
               "important": False
             },
             "a.http://www.foo.com/": {
               "current": [5],
+              "std": 0.0,
               "units": "seconds",
               "important": False
             }