WIP: Add support for additional flag-specified tracing categories.

telemetry/examples/benchmarks/tbm_benchmark.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.
 from telemetry import benchmark
 from telemetry.web_perf import timeline_based_measurement
 
 from benchmarks import simple_story_set
 
 class TBMSample(benchmark.Benchmark):
 
   def CreateStorySet(self, options):
     return simple_story_set.SimpleStorySet()
 
-  def CreateTimelineBasedMeasurementOptions(self):
+  def CreateBaseTimelineBasedMeasurementOptions(self):

[charliea (OOO until 10-5), 2017/07/07 20:06:59]

Maybe it's just me, but it feels like this name is getting long and hard to
understand for how easy a concept it is. I especially don't like the fact that
we have both "Base" and "Based" in the name and that they carry two different
meanings in it.

What about something like "CreateBaseTBMOptions"? Is this too acronym-y?

nednguyen@google.com, WDYT?

     options = timeline_based_measurement.Options()
     options.SetTimelineBasedMetrics(['sampleMetric'])
     return options
 
   @classmethod
   def Name(cls):
     return 'tbm_sample.tbm_sample'