Kill --memory-metrics and on-demand Memory.Browser/RenderUsed histograms

tools/perf/measurements/memory.py

Index: tools/perf/measurements/memory.py
diff --git a/tools/perf/measurements/memory.py b/tools/perf/measurements/memory.py
index 4512e019703e5251a4f5f729727f24328f886c10..8bf9274424d6b70f6f4b38f42ee351cb357cda9e 100644
--- a/tools/perf/measurements/memory.py
+++ b/tools/perf/measurements/memory.py
@@ -30,12 +30,6 @@ class Memory(page_test.PageTest):
     self._memory_metric.Start(page, tab)
     self._power_metric.Start(page, tab)
 
-  def CustomizeBrowserOptions(self, options):
-    memory.MemoryMetric.CustomizeBrowserOptions(options)
-    # Since this is a memory benchmark, we want to sample memory histograms at
-    # a high frequency.
-    options.AppendExtraBrowserArgs('--memory-metrics')
-
   def ValidateAndMeasurePage(self, page, tab, results):
     self._power_metric.Stop(page, tab)
     self._memory_metric.Stop(page, tab)