Make memory pressure notifier configurable

base/memory/memory_pressure_monitor_win.cc

 // 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.
 
 #include "base/memory/memory_pressure_monitor_win.h"
 
 #include <windows.h>
 
 #include "base/metrics/histogram_macros.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 180 matching lines @@
       break;
   }
 
   if (!notify)
     return;
 
   // Emit a notification of the current memory pressure level. This can only
   // happen for moderate and critical pressure levels.
   DCHECK_NE(MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE,
             current_memory_pressure_level_);
-  MemoryPressureListener::NotifyMemoryPressure(current_memory_pressure_level_);
+  Notify(current_memory_pressure_level_);
 }
 
 void MemoryPressureMonitor::CheckMemoryPressureAndRecordStatistics() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   CheckMemoryPressure();
 
   UMA_HISTOGRAM_ENUMERATION(
       "Memory.PressureLevel",
       MemoryPressureLevelToUmaEnumValue(current_memory_pressure_level_),
@@ skipping 33 matching lines @@
     MEMORYSTATUSEX* mem_status) {
   DCHECK(mem_status != nullptr);
   mem_status->dwLength = sizeof(*mem_status);
   if (!::GlobalMemoryStatusEx(mem_status))
     return false;
   return true;
 }
 
 }  // namespace win
 }  // namespace base