base: Remove some unnecessary const scoped_refptr<>&.

base/test/task_runner_test_template.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/test/task_runner_test_template.h"
 
 namespace base {
 
 namespace test {
 
@@ skipping 19 matching lines @@
   AutoLock lock(lock_);
   return task_run_counts_;
 }
 
 void TaskTracker::WaitForCompletedTasks(int count) {
   AutoLock lock(lock_);
   while (task_runs_ < count)
     task_runs_cv_.Wait();
 }
 
-void ExpectRunsTasksOnCurrentThread(
-    bool expected_value,
-    const scoped_refptr<TaskRunner>& task_runner) {
+void ExpectRunsTasksOnCurrentThread(bool expected_value,
+                                    TaskRunner* task_runner) {
   EXPECT_EQ(expected_value, task_runner->RunsTasksOnCurrentThread());
 }
 
 }  // namespace test
 
 }  // namespace base