Move components/memory_coordinator -> content/

components/memory_coordinator/browser/memory_monitor.h

-// Copyright (c) 2016 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 COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_MONITOR_H_
-#define COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_MONITOR_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "components/memory_coordinator/common/memory_coordinator_export.h"
-
-namespace base {
-struct SystemMemoryInfoKB;
-}
-
-namespace memory_coordinator {
-
-// A simple class that monitors the amount of free memory available on a system.
-// This is an interface to facilitate dependency injection for testing.
-class MEMORY_COORDINATOR_EXPORT MemoryMonitor {
- public:
-  MemoryMonitor() {}
-  virtual ~MemoryMonitor() {}
-
-  // Returns the amount of free memory available on the system until the system
-  // will be in a critical state. Critical is as defined by the OS (swapping
-  // will occur, or physical memory will run out, etc). It is possible for this
-  // to return negative values, in which case that much memory would have to be
-  // freed in order to exit a critical memory state.
-  virtual int GetFreeMemoryUntilCriticalMB() = 0;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MemoryMonitor);
-};
-
-// Factory function for creating a monitor for the current platform.
-MEMORY_COORDINATOR_EXPORT std::unique_ptr<MemoryMonitor> CreateMemoryMonitor();
-
-
-// A class for fetching system information used by a memory monitor. This can
-// be subclassed for testing or if a particular MemoryMonitor implementation
-// needs additional functionality.
-class MEMORY_COORDINATOR_EXPORT MemoryMonitorDelegate {
- public:
-  MemoryMonitorDelegate() {}
-  virtual ~MemoryMonitorDelegate();
-
-  // Returns system memory information.
-  virtual void GetSystemMemoryInfo(base::SystemMemoryInfoKB* mem_info);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MemoryMonitorDelegate);
-};
-
-}  // namespace memory_coordinator
-
-#endif  // COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_MONITOR_H_