{Csv,Block}PageMeasurementResults no longer perform streaming output.

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 20 matching lines @@
   mean = math.pow(math.e, (log_sum / len(new_values)))
   # Return the rounded mean.
   return int(round(mean))
 
 
 SCORE_UNIT = 'score (bigger is better)'
 SCORE_TRACE_NAME = 'score'
 
 
 class _DomPerfMeasurement(page_measurement.PageMeasurement):
-  @property
-  def results_are_the_same_on_every_page(self):
-    return False
-
   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']:
@@ skipping 36 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