Task Execution Duration metrics added as a new benchmark

tools/perf/benchmarks/task_execution_time.py

Index: tools/perf/benchmarks/task_execution_time.py
diff --git a/tools/perf/benchmarks/task_execution_time.py b/tools/perf/benchmarks/task_execution_time.py
new file mode 100644
index 0000000000000000000000000000000000000000..fffe11e65d0dfbefd04e6c349dc8ea736db73401
--- /dev/null
+++ b/tools/perf/benchmarks/task_execution_time.py
@@ -0,0 +1,21 @@
+# 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 page_sets
+from measurements import task_execution_time
+from telemetry import benchmark
+
+@benchmark.Enabled('android')
+class TaskExecutionTimeKeyMobileSites(benchmark.Benchmark):
+  """Measures task execution statistics while scrolling down key mobile sites.
+  http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
+  test = task_execution_time.TaskExecutionTime
+  page_set = page_sets.KeyMobileSitesPageSet
+
+@benchmark.Enabled('android')
+class TaskExecutionTimeToughSchedulingCases(benchmark.Benchmark):
+  """Measures task execution statistics while scrolling tough scheduling sites.
+  http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
+  test = task_execution_time.TaskExecutionTime
+  page_set = page_sets.ToughSchedulingCasesPageSet