base: Remove some unnecessary const scoped_refptr<>&.

base/deferred_sequenced_task_runner.cc

Index: base/deferred_sequenced_task_runner.cc
diff --git a/base/deferred_sequenced_task_runner.cc b/base/deferred_sequenced_task_runner.cc
index f805b50237c0735a2aff41382d7a5f1edd40bb05..7d09ef838cf37bc67137fa3549c0d77b01a01088 100644
--- a/base/deferred_sequenced_task_runner.cc
+++ b/base/deferred_sequenced_task_runner.cc
@@ -20,10 +20,8 @@ DeferredSequencedTaskRunner::DeferredTask::~DeferredTask() {
 }
 
 DeferredSequencedTaskRunner::DeferredSequencedTaskRunner(
-    const scoped_refptr<SequencedTaskRunner>& target_task_runner)
-    : started_(false),
-      target_task_runner_(target_task_runner) {
-}
+    scoped_refptr<SequencedTaskRunner> target_task_runner)
+    : started_(false), target_task_runner_(std::move(target_task_runner)) {}
 
 DeferredSequencedTaskRunner::~DeferredSequencedTaskRunner() {
 }