Support total and per-second task/threadtime timeline metrics

tools/perf/benchmarks/thread_times.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.
 
 from telemetry import benchmark
 
 from benchmarks import silk_flags
 from measurements import thread_times
 import page_sets
 
 class _ThreadTimes(benchmark.Benchmark):
   @classmethod
   def AddBenchmarkCommandLineArgs(cls, parser):
     parser.add_option('--report-silk-details', action='store_true',
                       help='Report details relevant to silk.')
 
   @classmethod
   def Name(cls):
     return 'thread_times'
 
+  @classmethod
+  def ValueCanBeAddedPredicate(cls, value, _):
+    # Default to only reporting per-frame metrics.
+    return 'per_ms' not in value.name
+
   def CreatePageTest(self, options):
     return thread_times.ThreadTimes(options.report_silk_details)
 
 
 @benchmark.Enabled('android')
 class ThreadTimesKeySilkCases(_ThreadTimes):
   """Measures timeline metrics while performing smoothness action on key silk
   cases."""
   page_set = page_sets.KeySilkCasesPageSet
 
@@ skipping 51 matching lines @@
 
 @benchmark.Enabled('android')
 class ThreadTimesPolymer(_ThreadTimes):
   """Measures timeline metrics while performing smoothness action on
   Polymer cases."""
   page_set = page_sets.PolymerPageSet
   @classmethod
   def Name(cls):
     return 'thread_times.polymer'