Pass Callback to TaskRunner by value and consume it on invocation (1)

components/user_manager/fake_user_manager.cc

Index: components/user_manager/fake_user_manager.cc
diff --git a/components/user_manager/fake_user_manager.cc b/components/user_manager/fake_user_manager.cc
index fac0724d6de169f52b6e2ce682ed84ce72ab843b..8eaa09a3f7fc85eb9f39b32d49cb8fb0d99b4e48 100644
--- a/components/user_manager/fake_user_manager.cc
+++ b/components/user_manager/fake_user_manager.cc
@@ -7,6 +7,7 @@
 #include <algorithm>
 
 #include "base/callback.h"
+#include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/sys_info.h"
 #include "base/task_runner.h"
@@ -19,9 +20,9 @@ namespace {
 class FakeTaskRunner : public base::TaskRunner {
  public:
   bool PostDelayedTask(const tracked_objects::Location& from_here,
-                       const base::Closure& task,
+                       base::Closure task,
                        base::TimeDelta delay) override {
-    task.Run();
+    base::ResetAndReturn(&task).Run();
     return true;
   }
   bool RunsTasksOnCurrentThread() const override { return true; }