Adds four benchmarks to measure v8 runtime + GC metrics on browsing story set.

tools/perf/benchmarks/v8_browsing.py

 # Copyright 2016 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 re
 
 from benchmarks import v8_helper
 from core import perf_benchmark
 from telemetry import benchmark
 from telemetry.timeline import chrome_trace_config
@@ skipping 67 matching lines @@
     if 'memory:chrome' in value.name:
       return ('renderer_processes' in value.name and
               not _IGNORED_MEMORY_STATS_RE.search(value.name))
     return (_V8_GC_HIGH_LEVEL_STATS_RE.search(value.name) and
             not _IGNORED_V8_STATS_RE.search(value.name))
 
   @classmethod
   def ShouldTearDownStateAfterEachStoryRun(cls):
     return True
 
+class _V8RuntimeStatsBrowsingBenchmark(perf_benchmark.PerfBenchmark):
+  """Base class for V8 browsing benchmarks that measure RuntimeStats.
+  RuntimeStats measure the time spent by v8 in different phases like
+  compile, JS execute, runtime etc.,
+  See browsing_stories._BrowsingStory for workload description.
+  """
+
+  def CreateTimelineBasedMeasurementOptions(self):
+    cat_filter = chrome_trace_category_filter.ChromeTraceCategoryFilter()
+
+    # V8 needed categories
+    cat_filter.AddIncludedCategory('v8')
+    cat_filter.AddDisabledByDefault('disabled-by-default-v8.runtime_stats')
+
+    tbm_options = timeline_based_measurement.Options(
+        overhead_level=cat_filter)
+    tbm_options.SetTimelineBasedMetrics(['runtimeStatsInteractiveMetric'])

[Camillo Bruni, 2017/01/19 19:08:23]

This should now be runtimeStatsTotalMetric, no?

Also, I think it would make sense to also add the runtimeStatsMetric, even
though we focus on browsing, we are still interested in startup?
I'd be also interested in seeing what the ratio between the startup and total
metric is going to be.

+    return tbm_options
+
+
+  def CreateStorySet(self, options):
+    return page_sets.SystemHealthStorySet(platform=self.PLATFORM, case='browse')
+
+  @classmethod
+  def Name(cls):
+    return 'v8.runtimestats.browsing_%s%s' % (cls.PLATFORM, cls.TEST_SUFFIX)
+
+  @classmethod
+  def ShouldTearDownStateAfterEachStoryRun(cls):
+    return True
+
 
 class _V8DesktopBrowsingBenchmark(_V8BrowsingBenchmark):
 
   @classmethod
   def ShouldDisable(cls, possible_browser):
     # http://crbug.com/628736
     if (possible_browser.platform.GetOSName() == 'mac' and
         possible_browser.browser_type == 'reference'):
       return True
 
@@ skipping 50 matching lines @@
 
 
 @benchmark.Disabled('reference')  # http://crbug.com/628631
 class V8MobileTurboBrowsingBenchmark(_V8MobileBrowsingBenchmark):
   PLATFORM = 'mobile'
   TEST_SUFFIX = '_turbo'
 
   def SetExtraBrowserOptions(self, options):
     super(V8MobileTurboBrowsingBenchmark, self).SetExtraBrowserOptions(
         options)
+
+
+@benchmark.Disabled('android') # http://crbug.com/682167
+class V8RuntimeStatsDesktopBrowsingBenchmark(
+    _V8RuntimeStatsBrowsingBenchmark):
+  PLATFORM = 'desktop'
+  TEST_SUFFIX = ''
+
+
+@benchmark.Disabled('android') # http://crbug.com/682167
+class V8RuntimeStatsDesktopTurboBrowsingBenchmark(
+    _V8RuntimeStatsBrowsingBenchmark):
+  PLATFORM = 'desktop'
+  TEST_SUFFIX = '_turbo'
+
+  def SetExtraBrowserOptions(self, options):
+    super(V8RuntimeStatsDesktopTurboBrowsingBenchmark,
+        self).SetExtraBrowserOptions(options)
     v8_helper.EnableTurbo(options)