BrowserOptions.extra_browser_args is now a set.

tools/perf/measurements/memory.py

 # Copyright (c) 2012 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 metrics import memory
 from telemetry.page import page_measurement
 
 class Memory(page_measurement.PageMeasurement):
   def __init__(self):
     super(Memory, self).__init__('stress_memory')
     self._memory_metric = None
 
   def DidStartBrowser(self, browser):
     self._memory_metric = memory.MemoryMetric(browser)
 
   def DidNavigateToPage(self, page, tab):
     self._memory_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.AppendExtraBrowserArg('--memory-metrics')
+    options.AppendExtraBrowserArgs('--memory-metrics')
 
   def CanRunForPage(self, page):
     return hasattr(page, 'stress_memory')
 
   def MeasurePage(self, page, tab, results):
     self._memory_metric.Stop(page, tab)
     self._memory_metric.AddResults(tab, results)
 
     if tab.browser.is_profiler_active('tcmalloc-heap'):
       # The tcmalloc_heap_profiler dumps files at regular
       # intervals (~20 secs).
       # This is a minor optimization to ensure it'll dump the last file when
       # the test completes.
       tab.ExecuteJavaScript("""
         if (chrome && chrome.memoryBenchmarking) {
           chrome.memoryBenchmarking.heapProfilerDump('renderer', 'final');
           chrome.memoryBenchmarking.heapProfilerDump('browser', 'final');
         }
       """)
 
   def DidRunTest(self, tab, results):
     self._memory_metric.AddSummaryResults(results)