Turn on heap profiling for memory.desktop benchmark

tools/perf/benchmarks/memory.py

Index: tools/perf/benchmarks/memory.py
diff --git a/tools/perf/benchmarks/memory.py b/tools/perf/benchmarks/memory.py
index 8d3d76c1db1528c809b0bf1773a55c84a3ccb080..889e0542b397ed8f9d3613fddc3067eee2673544 100644
--- a/tools/perf/benchmarks/memory.py
+++ b/tools/perf/benchmarks/memory.py
@@ -62,6 +62,13 @@ class MemoryBenchmarkTrivialSitesDesktop(_MemoryInfra):
     return page_sets.TrivialSitesStorySet(wait_in_seconds=0,
                                           measure_memory=True)
 
+  def SetExtraBrowserOptions(self, options):
+    super(MemoryBenchmarkTrivialSitesDesktop, self).SetExtraBrowserOptions(
+          options)
+    options.AppendExtraBrowserArgs([
+      '--enable-heap-profiling=native',
+    ])
+
   @classmethod
   def Name(cls):
     return 'memory.desktop'