[Benchmark] Upgrade v8.google to TBMv2

tools/perf/benchmarks/v8.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 os
 import shlex
 
 from core import path_util
 from core import perf_benchmark
 from page_sets import google_pages
 
@@ skipping 224 matching lines @@
 
 class V8Adword(perf_benchmark.PerfBenchmark):
   """Measures V8 Execution metrics on the Adword page."""
 
   def CreateTimelineBasedMeasurementOptions(self):
 
     category_filter = tracing_category_filter.CreateMinimalOverheadFilter()
     category_filter.AddIncludedCategory('v8')
     category_filter.AddIncludedCategory('blink.console')
     options = timeline_based_measurement.Options(category_filter)
-    options.SetLegacyTimelineBasedMetrics([v8_execution.V8ExecutionMetric()])
+    options.SetTimelineBasedMetric('executionMetric')
     return options
 
   def CreateStorySet(self, options):
     """Creates the instance of StorySet used to run the benchmark.
 
     Can be overridden by subclasses.
     """
     story_set = story.StorySet(
         archive_data_file=os.path.join(
             path_util.GetPerfStorySetsDir(), 'data', 'v8_pages.json'),
         cloud_storage_bucket=story.PARTNER_BUCKET)
     story_set.AddStory(google_pages.AdwordCampaignDesktopPage(story_set))
     return story_set
 
   @classmethod
   def Name(cls):
     return 'v8.google'
 
   @classmethod
   def ShouldDisable(cls, possible_browser):
     return cls.IsSvelte(possible_browser) # http://crbug.com/596556
 
   @classmethod
   def ShouldTearDownStateAfterEachStoryRun(cls):
     return True