Trace LayoutObject src attributes and parent frames

tools/perf/benchmarks/puf.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 core import perf_benchmark
+from telemetry.timeline import tracing_category_filter
+from telemetry.web_perf import timeline_based_measurement
+import page_sets
+
+class _PUFBenchmark(perf_benchmark.PerfBenchmark):
+  TRACING_CATEGORIES = [
+    'benchmark',
+    'blink',
+    'blink.user_timing',
+    'disabled-by-default-blink.debug.layout',
+    'navigation',
+  ]
+
+  def CreateTimelineBasedMeasurementOptions(self):
+    options = timeline_based_measurement.Options()
+    options.config.SetTracingCategoryFilter(
+        tracing_category_filter.TracingCategoryFilter(','.join(
+            self.TRACING_CATEGORIES)))
+    options.SetTimelineBasedMetric('PUFMetric')
+    return options
+
+
+class PUFTop10k(_PUFBenchmark):
+  page_set = page_sets.Alexa1To10000PageSet
+
+  @classmethod
+  def Name(cls):
+    return 'puf.top10k'