[Mac] Report statistics more regularly in Mac memory pressure monitor

base/memory/memory_pressure_monitor_win.h

Index: base/memory/memory_pressure_monitor_win.h
diff --git a/base/memory/memory_pressure_monitor_win.h b/base/memory/memory_pressure_monitor_win.h
index b52a2d27bfa456a625040e640de41c48ec6f66a5..a65c191a494175297b049cb3449a474a6f2307df 100644
--- a/base/memory/memory_pressure_monitor_win.h
+++ b/base/memory/memory_pressure_monitor_win.h
@@ -62,7 +62,7 @@ class BASE_EXPORT MemoryPressureMonitor : public base::MemoryPressureMonitor {
   void CheckMemoryPressureSoon();
 
   // Get the current memory pressure level. This can be called from any thread.
-  MemoryPressureLevel GetCurrentPressureLevel() const override;
+  MemoryPressureLevel GetCurrentPressureLevel() override;
   void SetDispatchCallback(const DispatchCallback& callback) override;
 
   // Returns the moderate pressure level free memory threshold, in MB.