Update dom_perf to use results.AddValue

tools/perf/benchmarks/dom_perf.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import json
 import math
 import os
 
 from telemetry import benchmark
 from telemetry.core import util
@@ skipping 34 matching lines @@
   def MeasurePage(self, page, tab, results):
     try:
       def _IsDone():
         return tab.GetCookieByName('__domperf_finished') == '1'
       util.WaitFor(_IsDone, 600)
 
       data = json.loads(tab.EvaluateJavaScript('__domperf_result'))
       for suite in data['BenchmarkSuites']:
         # Skip benchmarks that we didn't actually run this time around.
         if len(suite['Benchmarks']) or suite['score']:
-          results.Add(SCORE_TRACE_NAME, SCORE_UNIT,
-                      suite['score'], suite['name'], 'unimportant')
+          results.AddValue(scalar.ScalarValue(
+              results.current_page, '%s.%s' % (suite['name'], SCORE_TRACE_NAME),
+              SCORE_UNIT, suite['score'], important=False))
     finally:
       tab.EvaluateJavaScript('document.cookie = "__domperf_finished=0"')
 
   def DidRunTest(self, browser, results):
     # Now give the geometric mean as the total for the combined runs.
     combined = merge_values.MergeLikeValuesFromDifferentPages(
         results.all_page_specific_values,
         group_by_name_suffix=True)
     combined_score = [x for x in combined if x.name == SCORE_TRACE_NAME][0]
     total = _GeometricMean(combined_score.values)
@@ skipping 23 matching lines @@
       'Events',
       'Get+Elements',
       'GridSort',
       'Template'
     ]
     ps = page_set.PageSet(file_path=dom_perf_dir)
     for param in run_params:
       ps.AddPageWithDefaultRunNavigate(
         'file://run.html?reportInJS=1&run=%s' % param)
     return ps