Add a task manager column that shows memory state of processes

chrome/browser/task_manager/task_manager_observer.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_TASK_MANAGER_OBSERVER_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_OBSERVER_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 28 matching lines @@
   // Whether an observer is interested in knowing if a process is foregrounded
   // or backgrounded.
   REFRESH_TYPE_PRIORITY          = 1 << 11,
 
 #if defined(OS_LINUX)
   // For observers interested in getting the number of open file descriptors of
   // processes.
   REFRESH_TYPE_FD_COUNT          = 1 << 12,
 #endif  // defined(OS_LINUX)
 
+  REFRESH_TYPE_MEMORY_STATE      = 1 << 13,
+
   REFRESH_TYPE_MEMORY            = REFRESH_TYPE_PHYSICAL_MEMORY |
                                    REFRESH_TYPE_MEMORY_DETAILS,
 };
 
 // Defines the interface for observers of the task manager.
 class TaskManagerObserver {
  public:
   static bool IsResourceRefreshEnabled(RefreshType refresh_type,
                                        int refresh_flags);
 
@@ skipping 80 matching lines @@
   // calculated on each refresh.
   int64_t desired_resources_flags_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerObserver);
 };
 
 }  // namespace task_manager
 
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_OBSERVER_H_