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

content/browser/dom_storage/dom_storage_task_runner.cc

Index: content/browser/dom_storage/dom_storage_task_runner.cc
diff --git a/content/browser/dom_storage/dom_storage_task_runner.cc b/content/browser/dom_storage/dom_storage_task_runner.cc
index 21eb54dfc9f379c401b85ca2bd558e21f1e59f16..f4e18f0fb211ac945b1cfbe1e463cc8bceac0ccd 100644
--- a/content/browser/dom_storage/dom_storage_task_runner.cc
+++ b/content/browser/dom_storage/dom_storage_task_runner.cc
@@ -31,16 +31,17 @@ bool DOMStorageWorkerPoolTaskRunner::RunsTasksOnCurrentThread() const {
 
 bool DOMStorageWorkerPoolTaskRunner::PostDelayedTask(
     const tracked_objects::Location& from_here,
-    const base::Closure& task,
+    base::Closure task,
     base::TimeDelta delay) {
-  return primary_sequence_->PostDelayedTask(from_here, task, delay);
+  return primary_sequence_->PostDelayedTask(from_here, std::move(task), delay);
 }
 
 bool DOMStorageWorkerPoolTaskRunner::PostShutdownBlockingTask(
     const tracked_objects::Location& from_here,
     SequenceID sequence_id,
-    const base::Closure& task) {
-  return GetSequencedTaskRunner(sequence_id)->PostTask(from_here, task);
+    base::Closure task) {
+  return GetSequencedTaskRunner(sequence_id)
+      ->PostTask(from_here, std::move(task));
 }
 
 void DOMStorageWorkerPoolTaskRunner::AssertIsRunningOnPrimarySequence() const {
@@ -73,16 +74,16 @@ bool MockDOMStorageTaskRunner::RunsTasksOnCurrentThread() const {
 
 bool MockDOMStorageTaskRunner::PostDelayedTask(
     const tracked_objects::Location& from_here,
-    const base::Closure& task,
+    base::Closure task,
     base::TimeDelta delay) {
-  return task_runner_->PostTask(from_here, task);
+  return task_runner_->PostTask(from_here, std::move(task));
 }
 
 bool MockDOMStorageTaskRunner::PostShutdownBlockingTask(
     const tracked_objects::Location& from_here,
     SequenceID sequence_id,
-    const base::Closure& task) {
-  return task_runner_->PostTask(from_here, task);
+    base::Closure task) {
+  return task_runner_->PostTask(from_here, std::move(task));
 }
 
 void MockDOMStorageTaskRunner::AssertIsRunningOnPrimarySequence() const {