[Perf] Filter memory metrics in media benchmarks

tools/perf/benchmarks/media.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.
 
+import re
+
 from core import perf_benchmark
 
 from telemetry import benchmark
 from telemetry.page import legacy_page_test
 from telemetry.timeline import chrome_trace_category_filter
 from telemetry.timeline import chrome_trace_config
 from telemetry.value import list_of_scalar_values
 from telemetry.value import scalar
 from telemetry.web_perf import timeline_based_measurement
 
 from measurements import media
 import page_sets
 
 
+# See tr.v.Numeric.getSummarizedScalarNumericsWithNames()
+# https://github.com/catapult-project/catapult/blob/master/tracing/tracing/value/numeric.html#L323
+_IGNORED_STATS_RE = re.compile(
+    r'(?<!dump)(?<!process)_(std|count|max|min|sum|pct_\d{4}(_\d+)?)$')
+
+
 class _MSEMeasurement(legacy_page_test.LegacyPageTest):
 
   def __init__(self):
     super(_MSEMeasurement, self).__init__()
 
   def ValidateAndMeasurePage(self, page, tab, results):
     del page  # unused
     media_metric = tab.EvaluateJavaScript('window.__testMetrics')
     trace = media_metric['id'] if 'id' in media_metric else None
     metrics = media_metric['metrics'] if 'metrics' in media_metric else []
@@ skipping 80 matching lines @@
                  component='Internals>Media')
 @benchmark.Disabled('android')
 class MediaToughVideoCasesTBMv2(_MediaTBMv2Benchmark):
   """Obtains media metrics using TBMv2.
   Will eventually replace MediaToughVideoCases class."""
 
   @classmethod
   def Name(cls):
     return 'media.tough_video_cases_tbmv2'
 
+  @classmethod
+  def ValueCanBeAddedPredicate(cls, value, is_first_result):
+    # TODO(crbug.com/610962): Remove this stopgap when the perf dashboard
+    # is able to cope with the data load generated by TBMv2 metrics.
+    return not _IGNORED_STATS_RE.search(value.name)
+
 
 @benchmark.Owner(emails=['johnchen@chromium.org', 'crouleau@chromium.org'],
                  component='Internals>Media')
 @benchmark.Enabled('android')
 @benchmark.Disabled('l', 'android-webview')  # WebView: crbug.com/419689.
 class MediaAndroidToughVideoCasesTBMv2(_MediaTBMv2Benchmark):
   """Obtains media metrics for key user scenarios on Android using TBMv2.
   Will eventually replace MediaAndroidToughVideoCases class."""
 
   tag = 'android'
@@ skipping 13 matching lines @@
     # The following option works around that.
     # Note that both of these flags should be used until every build from
     # ToT to Stable switches over to one flag or another. This is to support
     # reference builds.
     # --disable-gesture-requirement-for-media-playback is the old one and can be
     # removed after M60 goes to stable.
     options.AppendExtraBrowserArgs(
         ['--ignore-autoplay-restrictions',
          '--disable-gesture-requirement-for-media-playback'])
 
+  @classmethod
+  def ValueCanBeAddedPredicate(cls, value, is_first_result):
+    # TODO(crbug.com/610962): Remove this stopgap when the perf dashboard
+    # is able to cope with the data load generated by TBMv2 metrics.
+    return not _IGNORED_STATS_RE.search(value.name)
+
 
 @benchmark.Disabled('all')  # crbug/676345
 @benchmark.Owner(emails=['crouleau@chromium.org', 'videostack-eng@google.com'],
                  component='Internals>Media')
 class MediaNetworkSimulation(perf_benchmark.PerfBenchmark):
   """Obtains media metrics under different network simulations."""
   test = media.Media
   page_set = page_sets.MediaCnsCasesPageSet
 
   @classmethod
@@ skipping 11 matching lines @@
 
   @classmethod
   def Name(cls):
     return 'media.mse_cases'
 
   def SetExtraBrowserOptions(self, options):
     # Needed to allow XHR requests to return stream objects.
     options.AppendExtraBrowserArgs(
         ['--enable-experimental-web-platform-features',
          '--ignore-autoplay-restrictions'])