Migrate base::TaskRunner from Closure to OnceClosure

media/base/fake_single_thread_task_runner.cc

Index: media/base/fake_single_thread_task_runner.cc
diff --git a/media/base/fake_single_thread_task_runner.cc b/media/base/fake_single_thread_task_runner.cc
index 63d741f8a1957c007f1ecc8fccc73ad1d71625fb..c57ae1fd8cf3e11917a3b5722ea1a15eae8cc0fc 100644
--- a/media/base/fake_single_thread_task_runner.cc
+++ b/media/base/fake_single_thread_task_runner.cc
@@ -20,7 +20,7 @@ FakeSingleThreadTaskRunner::~FakeSingleThreadTaskRunner() {}
 
 bool FakeSingleThreadTaskRunner::PostDelayedTask(
     const tracked_objects::Location& from_here,
-    base::Closure task,
+    base::OnceClosure task,
     base::TimeDelta delay) {
   if (fail_on_next_task_) {
     LOG(FATAL) << "Infinite task posting loop detected.  Possibly caused by "
@@ -69,7 +69,7 @@ void FakeSingleThreadTaskRunner::RunTasks() {
     if (clock_->NowTicks() < it->first.first)
       return;
 
-    base::Closure task = std::move(it->second);
+    base::OnceClosure task = std::move(it->second);
     tasks_.erase(it);
     std::move(task).Run();
   }
@@ -90,9 +90,9 @@ void FakeSingleThreadTaskRunner::Sleep(base::TimeDelta t) {
       }
 
       clock_->Advance(it->first.first - clock_->NowTicks());
-      const base::Closure task = it->second;
+      base::OnceClosure task = std::move(it->second);
       tasks_.erase(it);
-      task.Run();
+      std::move(task).Run();
     }
 
     // If this point is reached, there's likely some sort of case where a new
@@ -106,7 +106,7 @@ void FakeSingleThreadTaskRunner::Sleep(base::TimeDelta t) {
 
 bool FakeSingleThreadTaskRunner::PostNonNestableDelayedTask(
     const tracked_objects::Location& from_here,
-    base::Closure task,
+    base::OnceClosure task,
     base::TimeDelta delay) {
   NOTIMPLEMENTED();
   return false;