[Telemetry refactor] Drop "2" from method calls to JS API

tools/perf/metrics/webrtc_stats.py

 # Copyright 2014 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 logging
 import re
 
 from telemetry.internal.util import camel_case
 from telemetry.value import list_of_scalar_values
@@ skipping 122 matching lines @@
   def __init__(self, particular_metrics=None):
     super(WebRtcStatisticsMetric, self).__init__()
     self._all_reports = None
     self._selected_metrics = SelectMetrics(particular_metrics)
 
   def Start(self, page, tab):
     pass
 
   def Stop(self, page, tab):
     """Digs out stats from data populated by the javascript in webrtc_cases."""
-    self._all_reports = tab.EvaluateJavaScript2(
+    self._all_reports = tab.EvaluateJavaScript(
         'JSON.stringify(window.peerConnectionReports)')
 
   def AddResults(self, tab, results):
     if not self._all_reports:
       return
 
     reports = json.loads(self._all_reports)
     for i, report in enumerate(reports):
       time_series = SortStatsIntoTimeSeries(report, self._selected_metrics)
 
       # Only ever show stats for 5 peer connections, or it's going to look
       # insane in the results.
       if i > 5:
         PrintSpecialMarkerValue(results)
         return
 
       for stat_name, values in time_series.iteritems():
         stat_name_underscored = camel_case.ToUnderscore(stat_name)
         trace_name = 'peer_connection_%d_%s' % (i, stat_name_underscored)
         general_name = StripAudioVideoBweDistinction(stat_name)
         results.AddValue(list_of_scalar_values.ListOfScalarValues(
             results.current_page, trace_name,
             INTERESTING_METRICS[general_name]['units'], values,
             description=INTERESTING_METRICS[general_name]['description'],
             important=False))