[tools/perf] Add memory.top_10_mobile_stress benchmark

tools/perf/benchmarks/memory_infra.py

 # Copyright 2015 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.timeline import chrome_trace_category_filter
@@ skipping 56 matching lines @@
     return not possible_browser.platform.CanLaunchApplication(
         'com.google.android.deskclock')
 
   @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)
 
 
+class MemoryBenchmarkTop10MobileStress(MemoryBenchmarkTop10Mobile):
+  """Run top 10 mobile page set without closing/restarting the browser.
+
+  This benchmark is intended to stress-test the browser, catching memory leaks
+  or possible crashes after interacting with the browser for a period of time.
+  """
+  @classmethod
+  def Name(cls):
+    return 'memory.top_10_mobile_stress'
+
+  @classmethod
+  def ShouldTearDownStateAfterEachStorySetRun(cls):
+    return False
+
+
 # Benchmark disabled by default. Force to run with --also-run-disabled-tests.
 @benchmark.Disabled('all')
 class DualBrowserBenchmark(_MemoryInfra):
   """Measures memory usage while interacting with two different browsers.
 
   The user story involves going back and forth between doing Google searches
   on a webview-based browser (a stand in for the Search app), and loading
   pages on a select browser.
   """
   page_set = page_sets.DualBrowserStorySet
@@ skipping 114 matching lines @@
   of long running idle Gmail page """
   page_set = page_sets.LongRunningIdleGmailBackgroundPageSet
 
   @classmethod
   def Name(cls):
     return 'memory.long_running_idle_gmail_background_tbmv2'
 
   @classmethod
   def ShouldDisable(cls, possible_browser):  # http://crbug.com/616530
     return cls.IsSvelte(possible_browser)