[telemetry] Move tab from RunState to PageState.

tools/perf/benchmarks/dom_perf.py

 # Copyright (c) 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 test
 from telemetry.core import util
@@ skipping 37 matching lines @@
 
       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')
     finally:
       tab.EvaluateJavaScript('document.cookie = "__domperf_finished=0"')
 
-  def DidRunTest(self, tab, results):
+  def DidRunTest(self, browser, results):
     # Now give the geometric mean as the total for the combined runs.
     scores = []
     for result in results.page_results:
       scores.append(result[SCORE_TRACE_NAME].output_value)
     total = _GeometricMean(scores)
     results.AddSummary(SCORE_TRACE_NAME, SCORE_UNIT, total, 'Total')
 
 
 class DomPerf(test.Test):
   """A suite of JavaScript benchmarks for exercising the browser's DOM.
@@ skipping 13 matching lines @@
           { 'url': base_page + 'CreateNodes' },
           { 'url': base_page + 'DOMDivWalk' },
           { 'url': base_page + 'DOMTable' },
           { 'url': base_page + 'DOMWalk' },
           { 'url': base_page + 'Events' },
           { 'url': base_page + 'Get+Elements' },
           { 'url': base_page + 'GridSort' },
           { 'url': base_page + 'Template' }
           ]
         }, dom_perf_dir)