Add a task manager column that shows memory state of processes

chrome/browser/task_manager/task_manager_tester.h

 // Copyright 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 CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_TESTER_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_TESTER_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/callback_forward.h"
+#include "base/memory/memory_coordinator_client.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/task_manager/task_manager_browsertest_util.h"
 
 namespace task_manager {
 
 class ScopedInterceptTableModelObserver;
 class TaskManagerInterface;
 class TaskManagerTableModel;
 
 // An adapter to simplify testing the task manager.
@@ skipping 20 matching lines @@
   // necessarily gathered.
   void ToggleColumnVisibility(ColumnSpecifier column);
 
   // Get the value of a column as an int64. Memory values are in bytes.
   int64_t GetColumnValue(ColumnSpecifier column, int row);
 
   // If |row| is associated with a WebContents, return its SessionID. Otherwise,
   // return -1.
   int32_t GetTabId(int row);
 
+  // Return the memory state of the process which is associated with |row|.
+  base::MemoryState GetMemoryState(int row);
+
   // Kill the process of |row|.
   void Kill(int row);
 
   // Gets the start index and length of the group to which the task at
   // |row_index| belongs.
   void GetRowsGroupRange(int row, int* out_start, int* out_length);
 
  private:
   explicit TaskManagerTester(const base::Closure& on_resource_change);
 
   TaskManagerInterface* task_manager();
 
   TaskManagerTableModel* model_;
   std::unique_ptr<ScopedInterceptTableModelObserver> interceptor_;
 };
 
 }  // namespace task_manager
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_TESTER_H_