[ChromeOS] Add Swapped Memory to TaskManager

chrome/browser/task_management/sampling/task_manager_impl.cc

 // 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.
 
 #include "chrome/browser/task_management/sampling/task_manager_impl.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 81 matching lines @@
 }
 
 int64_t TaskManagerImpl::GetPrivateMemoryUsage(TaskId task_id) const {
   return GetTaskGroupByTaskId(task_id)->private_bytes();
 }
 
 int64_t TaskManagerImpl::GetSharedMemoryUsage(TaskId task_id) const {
   return GetTaskGroupByTaskId(task_id)->shared_bytes();
 }
 
+int64_t TaskManagerImpl::GetSwappedMemoryUsage(TaskId task_id) const {
+#if defined(OS_CHROMEOS)
+  return GetTaskGroupByTaskId(task_id)->swapped_bytes();
+#else
+  return -1;
+#endif
+}
+
 int64_t TaskManagerImpl::GetGpuMemoryUsage(TaskId task_id,
                                            bool* has_duplicates) const {
   const TaskGroup* task_group = GetTaskGroupByTaskId(task_id);
   if (has_duplicates)
     *has_duplicates = task_group->gpu_memory_has_duplicates();
   return task_group->gpu_memory();
 }
 
 int TaskManagerImpl::GetIdleWakeupsPerSecond(TaskId task_id) const {
   return GetTaskGroupByTaskId(task_id)->idle_wakeups_per_second();
@@ skipping 328 matching lines @@
         groups_itr.second->AreBackgroundCalculationsDone();
   }
   if (are_all_processes_data_ready) {
     NotifyObserversOnRefreshWithBackgroundCalculations(GetTaskIdsList());
     for (auto& groups_itr : task_groups_by_proc_id_)
       groups_itr.second->ClearCurrentBackgroundCalculationsFlags();
   }
 }
 
 }  // namespace task_management