Migrate ChromeOS to base::MemoryPressureMonitor

chrome/browser/browser_process_platform_part_chromeos.h

 // Copyright (c) 2013 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 CHROME_BROWSER_BROWSER_PROCESS_PLATFORM_PART_CHROMEOS_H_
 #define CHROME_BROWSER_BROWSER_PROCESS_PLATFORM_PART_CHROMEOS_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/non_thread_safe.h"
@@ skipping 20 matching lines @@
 
 namespace policy {
 class BrowserPolicyConnector;
 class BrowserPolicyConnectorChromeOS;
 }
 
 namespace session_manager {
 class SessionManager;
 }
 
+class MemoryPressureMonitorChromeOS;
 class Profile;
 
 class BrowserProcessPlatformPart : public BrowserProcessPlatformPartBase,
                                    public base::NonThreadSafe {
  public:
   BrowserProcessPlatformPart();
   ~BrowserProcessPlatformPart() override;
 
   void InitializeAutomaticRebootManager();
   void ShutdownAutomaticRebootManager();
@@ skipping 49 matching lines @@
       override;
 
  private:
   void CreateProfileHelper();
 
   scoped_ptr<session_manager::SessionManager> session_manager_;
 
   bool created_profile_helper_;
   scoped_ptr<chromeos::ProfileHelper> profile_helper_;
 
+  scoped_ptr<MemoryPressureMonitorChromeOS> memory_pressure_monitor_;
   scoped_ptr<chromeos::OomPriorityManager> oom_priority_manager_;
 
   scoped_ptr<chromeos::system::AutomaticRebootManager>
       automatic_reboot_manager_;
 
   scoped_ptr<chromeos::ChromeUserManager> chrome_user_manager_;
 
   scoped_ptr<chromeos::system::DeviceDisablingManagerDefaultDelegate>
       device_disabling_manager_delegate_;
   scoped_ptr<chromeos::system::DeviceDisablingManager>
       device_disabling_manager_;
 
   scoped_ptr<chromeos::TimeZoneResolver> timezone_resolver_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessPlatformPart);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_PLATFORM_PART_CHROMEOS_H_