Add a task manager column that shows memory state of processes

chrome/browser/task_manager/sampling/task_manager_impl.cc

Index: chrome/browser/task_manager/sampling/task_manager_impl.cc
diff --git a/chrome/browser/task_manager/sampling/task_manager_impl.cc b/chrome/browser/task_manager/sampling/task_manager_impl.cc
index 8d12ca5a5bd60b042b9e5627c9f17cc5e8c4200a..fb8121d8461ead13f9ec34a048f0f6b919e14325 100644
--- a/chrome/browser/task_manager/sampling/task_manager_impl.cc
+++ b/chrome/browser/task_manager/sampling/task_manager_impl.cc
@@ -121,6 +121,10 @@ int64_t TaskManagerImpl::GetGpuMemoryUsage(TaskId task_id,
   return task_group->gpu_memory();
 }
 
+base::MemoryState TaskManagerImpl::GetMemoryState(TaskId task_id) const {
+  return GetTaskGroupByTaskId(task_id)->memory_state();
+}
+
 int TaskManagerImpl::GetIdleWakeupsPerSecond(TaskId task_id) const {
   return GetTaskGroupByTaskId(task_id)->idle_wakeups_per_second();
 }