Add a task manager column that shows memory state of processes

chrome/browser/task_manager/task_manager_interface.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_INTERFACE_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_INTERFACE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
 
 #include "base/macros.h"
+#include "base/memory/memory_coordinator_client.h"
 #include "base/observer_list.h"
 #include "base/process/kill.h"
 #include "base/process/process_handle.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/task_manager/providers/task.h"
 #include "chrome/browser/task_manager/task_manager_observer.h"
 #include "third_party/WebKit/public/web/WebCache.h"
 #include "ui/gfx/image/image_skia.h"
 
@@ skipping 54 matching lines @@
   virtual int64_t GetSharedMemoryUsage(TaskId task_id) const = 0;
   virtual int64_t GetSwappedMemoryUsage(TaskId task_id) const = 0;
 
   // Returns the GPU memory usage of the task with |task_id| in bytes. A value
   // of -1 means no valid value is currently available.
   // |has_duplicates| will be set to true if this process' GPU resource count is
   // inflated because it is counting other processes' resources.
   virtual int64_t GetGpuMemoryUsage(TaskId task_id,
                                     bool* has_duplicates) const = 0;
 
+  // Returns the memory state of the task with |task_id|.
+  virtual base::MemoryState GetMemoryState(TaskId task_id) const = 0;
+
   // Returns the number of average idle CPU wakeups per second since the last
   // refresh cycle. A value of -1 means no valid value is currently available.
   virtual int GetIdleWakeupsPerSecond(TaskId task_id) const = 0;
 
   // Returns the NaCl GDB debug stub port. A value of
   // |nacl::kGdbDebugStubPortUnknown| means no valid value is currently
   // available. A value of -2 means NaCl is not enabled for this build.
   virtual int GetNaClDebugStubPort(TaskId task_id) const = 0;
 
   // On Windows, gets the current and peak number of GDI and USER handles in
@@ skipping 171 matching lines @@
 
   // The flags containing the enabled resources types calculations.
   int64_t enabled_resources_flags_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerInterface);
 };
 
 }  // namespace task_manager
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_INTERFACE_H_