Add new trivial sites memory benchmark.

tools/perf/benchmarks/memory.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 33 matching lines @@
   def SetExtraBrowserOptions(self, options):
     # Just before we measure memory we flush the system caches
     # unfortunately this doesn't immediately take effect, instead
     # the next page run is effected. Due to this the first page run
     # has anomalous results. This option causes us to flush caches
     # each time before Chrome starts so we effect even the first page
     # - avoiding the bug.
     options.clear_sytem_cache_for_browser_and_profile_on_start = True
 
 
+@benchmark.Enabled('mac')
+@benchmark.Enabled('win')
+@benchmark.Owner(emails=['erikchen@chromium.org'])
+class MemoryBenchmarkTrivialSitesDesktop(_MemoryInfra):
+  """Measure memory usage on trivial sites."""
+  page_set = page_sets.TrivialSitesStorySet
+  options = {'pageset_repeat': 5}
+
+  @classmethod
+  def Name(cls):
+    return 'memory.desktop'
+
+  @classmethod
+  def ShouldTearDownStateAfterEachStoryRun(cls):
+    return True
+
+  @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.Enabled('android')  # catapult:#3176
 @benchmark.Owner(emails=['perezju@chromium.org'])
 class MemoryBenchmarkTop10Mobile(_MemoryInfra):
   """Measure foreground/background memory on top 10 mobile page set.
 
   This metric provides memory measurements for the System Health Plan of
   Chrome on Android.
   """
   page_set = page_sets.MemoryTop10Mobile
   options = {'pageset_repeat': 5}
@@ skipping 182 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)