[Telemetry] Add interaction_record field to Value

tools/telemetry/telemetry/value/histogram.py

Index: tools/telemetry/telemetry/value/histogram.py
diff --git a/tools/telemetry/telemetry/value/histogram.py b/tools/telemetry/telemetry/value/histogram.py
index 877e135e5403af2024720cd9f51f2d6f90dce7c3..6f5d4067c8c7766b2fca483f056bcd3f54656853 100644
--- a/tools/telemetry/telemetry/value/histogram.py
+++ b/tools/telemetry/telemetry/value/histogram.py
@@ -29,9 +29,9 @@ class HistogramValueBucket(object):
 class HistogramValue(value_module.Value):
   def __init__(self, page, name, units,
                raw_value=None, raw_value_json=None, important=True,
-               description=None):
+               description=None, interaction_record=None):
     super(HistogramValue, self).__init__(page, name, units, important,
-                                         description)
+                                         description, interaction_record)
     if raw_value_json:
       assert raw_value == None, \
              'Don\'t specify both raw_value and raw_value_json'
@@ -52,12 +52,13 @@ class HistogramValue(value_module.Value):
     else:
       page_name = None
     return ('HistogramValue(%s, %s, %s, raw_json_string="%s", '
-            'important=%s, description=%s') % (
-              page_name,
-              self.name, self.units,
-              self.ToJSONString(),
-              self.important,
-              self.description)
+            'important=%s, description=%s, interaction_record=%s') % (
+                page_name,
+                self.name, self.units,
+                self.ToJSONString(),
+                self.important,
+                self.description,
+                self.interaction_record)
 
   def GetBuildbotDataType(self, output_context):
     if self._IsImportantGivenOutputIntent(output_context):
@@ -103,6 +104,9 @@ class HistogramValue(value_module.Value):
     kwargs = value_module.Value.GetConstructorKwArgs(value_dict, page_dict)
     kwargs['raw_value'] = value_dict
 
+    if 'interaction_record' in value_dict:
+      kwargs['interaction_record'] = value_dict['interaction_record']
+
     return HistogramValue(**kwargs)
 
   @classmethod
@@ -113,7 +117,7 @@ class HistogramValue(value_module.Value):
         v0.page, v0.name, v0.units,
         raw_value_json=histogram_util.AddHistograms(
             [v.ToJSONString() for v in values]),
-        important=v0.important)
+        important=v0.important, interaction_record=v0.interaction_record)
 
   @classmethod
   def MergeLikeValuesFromDifferentPages(cls, values,