Move base to DEPS

base/memory/memory_pressure_monitor.h

-// 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.
-
-#ifndef BASE_MEMORY_MEMORY_PRESSURE_MONITOR_H_
-#define BASE_MEMORY_MEMORY_PRESSURE_MONITOR_H_
-
-#include "base/base_export.h"
-#include "base/memory/memory_pressure_listener.h"
-
-namespace base {
-
-// TODO(chrisha): Make this a concrete class with per-OS implementations rather
-// than an abstract base class.
-
-// Declares the interface for a MemoryPressureMonitor. There are multiple
-// OS specific implementations of this class. An instance of the memory
-// pressure observer is created at the process level, tracks memory usage, and
-// pushes memory state change notifications to the static function
-// base::MemoryPressureListener::NotifyMemoryPressure. This is turn notifies
-// all MemoryPressureListener instances via a callback.
-class BASE_EXPORT MemoryPressureMonitor {
- public:
-  using MemoryPressureLevel = base::MemoryPressureListener::MemoryPressureLevel;
-
-  virtual ~MemoryPressureMonitor();
-
-  // Return the singleton MemoryPressureMonitor.
-  static MemoryPressureMonitor* Get();
-
-  // Returns the currently observed memory pressure.
-  virtual MemoryPressureLevel GetCurrentPressureLevel() const = 0;
-
- protected:
-  MemoryPressureMonitor();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MemoryPressureMonitor);
-};
-
-}  // namespace base
-
-#endif  // BASE_MEMORY_MEMORY_PRESSURE_MONITOR_H_