TaskScheduler: TimeDelta instead of TimeTicks in Task's constructor.

base/task_scheduler/scheduler_worker_thread_unittest.cc

Index: base/task_scheduler/scheduler_worker_thread_unittest.cc
diff --git a/base/task_scheduler/scheduler_worker_thread_unittest.cc b/base/task_scheduler/scheduler_worker_thread_unittest.cc
index 9e9e28862572ead1422520821f43215291440082..36fa42369fd5ef7d79be6c305860660dcb81d56d 100644
--- a/base/task_scheduler/scheduler_worker_thread_unittest.cc
+++ b/base/task_scheduler/scheduler_worker_thread_unittest.cc
@@ -125,7 +125,7 @@ class TaskSchedulerWorkerThreadTest : public testing::TestWithParam<size_t> {
         std::unique_ptr<Task> task(new Task(
             FROM_HERE, Bind(&TaskSchedulerWorkerThreadTest::RunTaskCallback,
                             Unretained(outer_)),
-            TaskTraits(), TimeTicks()));
+            TaskTraits(), TimeDelta()));
         EXPECT_TRUE(outer_->task_tracker_.WillPostTask(task.get()));
         sequence->PushTask(std::move(task));
       }