Add a task manager column that shows memory state of processes

chrome/browser/task_manager/sampling/task_manager_impl.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 CHROME_BROWSER_TASK_MANAGER_SAMPLING_TASK_MANAGER_IMPL_H_
 #define CHROME_BROWSER_TASK_MANAGER_SAMPLING_TASK_MANAGER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 32 matching lines @@
   void ActivateTask(TaskId task_id) override;
   bool IsTaskKillable(TaskId task_id) override;
   void KillTask(TaskId task_id) override;
   double GetCpuUsage(TaskId task_id) const override;
   int64_t GetPhysicalMemoryUsage(TaskId task_id) const override;
   int64_t GetPrivateMemoryUsage(TaskId task_id) const override;
   int64_t GetSharedMemoryUsage(TaskId task_id) const override;
   int64_t GetSwappedMemoryUsage(TaskId task_id) const override;
   int64_t GetGpuMemoryUsage(TaskId task_id,
                             bool* has_duplicates) const override;
+  base::MemoryState GetMemoryState(TaskId task_id) const override;
   int GetIdleWakeupsPerSecond(TaskId task_id) const override;
   int GetNaClDebugStubPort(TaskId task_id) const override;
   void GetGDIHandles(TaskId task_id,
                      int64_t* current,
                      int64_t* peak) const override;
   void GetUSERHandles(TaskId task_id,
                       int64_t* current,
                       int64_t* peak) const override;
   int GetOpenFdCount(TaskId task_id) const override;
   bool IsTaskOnBackgroundedProcess(TaskId task_id) const override;
@@ skipping 101 matching lines @@
   // This will be set to true while there are observers and the task manager is
   // running.
   bool is_running_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerImpl);
 };
 
 }  // namespace task_manager
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_SAMPLING_TASK_MANAGER_IMPL_H_