Rewrite base::Bind into base::BindOnce on trivial cases in base

base/debug/activity_tracker.cc

Index: base/debug/activity_tracker.cc
diff --git a/base/debug/activity_tracker.cc b/base/debug/activity_tracker.cc
index 5081c1c9d20b0da899481b81d9b0c347afe5cb96..f25ac97d39b66ec91303731ad3786f85e0fb6d6f 100644
--- a/base/debug/activity_tracker.cc
+++ b/base/debug/activity_tracker.cc
@@ -1463,8 +1463,8 @@ void GlobalActivityTracker::RecordProcessExit(ProcessId process_id,
   if (task_runner && !task_runner->RunsTasksOnCurrentThread()) {
     task_runner->PostTask(
         FROM_HERE,
-        Bind(&GlobalActivityTracker::CleanupAfterProcess, Unretained(this), pid,
-             now_stamp, exit_code, Passed(&command_line)));
+        BindOnce(&GlobalActivityTracker::CleanupAfterProcess, Unretained(this),
+                 pid, now_stamp, exit_code, Passed(&command_line)));
     return;
   }