text: # Copyright 2015 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 core import perf_benchmark
  
  from telemetry import benchmark
  from telemetry.timeline import tracing_category_filter
  from telemetry.web_perf import timeline_based_measurement
  
  import page_sets
  
  
  BLOB_CATEGORY = 'Blob'
  TIMELINE_REQUIRED_CATEGORY = 'blink.console'
  
  
  @benchmark.Disabled  # http://crbug.com/510815
  #@benchmark.Disabled('reference',  # http://crbug.com/496155
  #                    'android')    # http://crbug.com/499325
  class BlobStorage(perf_benchmark.PerfBenchmark):
    """Timeline based measurement benchmark for Blob Storage."""
  
    page_set = page_sets.BlobWorkshopPageSet
  
    def CreateTimelineBasedMeasurementOptions(self):
      cat_filter = tracing_category_filter.CreateMinimalOverheadFilter()
      cat_filter.AddIncludedCategory(BLOB_CATEGORY)
      cat_filter.AddIncludedCategory(TIMELINE_REQUIRED_CATEGORY)
  
      return timeline_based_measurement.Options(
          overhead_level=cat_filter)
  
    @classmethod
    def Name(cls):
      return 'blob_storage.blob_storage'
  
    @classmethod
    def ValueCanBeAddedPredicate(cls, value, is_first_result):
      if ('blob-writes' not in value.name and
          'blob-reads' not in value.name):
        return False
      return value.values != None
  