WebRTC: Add a TBMv2 version of the webrtc.webrtc_smoothness benchmark.

tools/perf/benchmarks/webrtc.py

Index: tools/perf/benchmarks/webrtc.py
diff --git a/tools/perf/benchmarks/webrtc.py b/tools/perf/benchmarks/webrtc.py
index d9388a7fc052b8310042dc0b517bd7ad7bbd3412..8b1bea3afc14b47b1c629a2dc82c23f834ac2783 100644
--- a/tools/perf/benchmarks/webrtc.py
+++ b/tools/perf/benchmarks/webrtc.py
@@ -91,3 +91,30 @@ class WebrtcRendering(perf_benchmark.PerfBenchmark):
   @classmethod
   def Name(cls):
     return 'webrtc.webrtc_smoothness'
+
+
+# WebrtcRenderingTBMv2 must be a PerfBenchmark, and not a _Webrtc, because it is
+# a timeline-based metric.
+class WebrtcRenderingTBMv2(perf_benchmark.PerfBenchmark):

[nednguyen, 2017/03/15 13:26:38]

can you add @benchmark.Owner(emails=...) for this one?

+  """Specific time measurements (e.g. fps, smoothness) for WebRtc rendering."""
+
+  page_set = page_sets.WebrtcRenderingPageSet
+
+  def CreateTimelineBasedMeasurementOptions(self):
+    category_filter = chrome_trace_category_filter.ChromeTraceCategoryFilter(
+        filter_string='webrtc,webkit.console,toplevel')

[nednguyen, 2017/03/15 13:26:38]

you don't need webkit.console category.

+    options = timeline_based_measurement.Options(category_filter)
+    options.SetTimelineBasedMetrics([
+        'cpuTimeMetric',
+        'expectedQueueingTimeMetric',

[ehmaldonado_chromium, 2017/03/14 19:54:00]

Because of crbug.com/671121

+        'webrtcRenderingMetric',
+    ])
+    return options
+
+  def SetExtraBrowserOptions(self, options):
+    options.AppendExtraBrowserArgs('--use-fake-device-for-media-stream')
+    options.AppendExtraBrowserArgs('--use-fake-ui-for-media-stream')
+
+  @classmethod
+  def Name(cls):
+    return 'webrtc.webrtc_smoothness_tbmv2'