[ChromeOS] Add Swapped Memory to TaskManager

chrome/browser/task_management/sampling/task_manager_impl.cc

Index: chrome/browser/task_management/sampling/task_manager_impl.cc
diff --git a/chrome/browser/task_management/sampling/task_manager_impl.cc b/chrome/browser/task_management/sampling/task_manager_impl.cc
index c7e7c8dff609841692b99f464e1ab12952d95d28..494563916f8724638087d7cd4c5ade9fbc7ab5b9 100644
--- a/chrome/browser/task_management/sampling/task_manager_impl.cc
+++ b/chrome/browser/task_management/sampling/task_manager_impl.cc
@@ -99,6 +99,14 @@ 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);