TaskScheduler: Remove base::ExecutionMode.

base/task_scheduler/task_scheduler_impl.cc

Index: base/task_scheduler/task_scheduler_impl.cc
diff --git a/base/task_scheduler/task_scheduler_impl.cc b/base/task_scheduler/task_scheduler_impl.cc
index 9ae02ccc6db778ea4bcf6de54b4ccab0192186eb..708685d68d66316556591488e91c7e55e1b5bd75 100644
--- a/base/task_scheduler/task_scheduler_impl.cc
+++ b/base/task_scheduler/task_scheduler_impl.cc
@@ -52,10 +52,22 @@ void TaskSchedulerImpl::PostTaskWithTraits(
 }
 
 scoped_refptr<TaskRunner> TaskSchedulerImpl::CreateTaskRunnerWithTraits(
-    const TaskTraits& traits,
-    ExecutionMode execution_mode) {
-  return GetWorkerPoolForTraits(traits)->CreateTaskRunnerWithTraits(
-      traits, execution_mode);
+    const TaskTraits& traits) {
+  return GetWorkerPoolForTraits(traits)->CreateTaskRunnerWithTraits(traits);
+}
+
+scoped_refptr<SequencedTaskRunner>
+TaskSchedulerImpl::CreateSequencedTaskRunnerWithTraits(
+    const TaskTraits& traits) {
+  return GetWorkerPoolForTraits(traits)->CreateSequencedTaskRunnerWithTraits(
+      traits);
+}
+
+scoped_refptr<SingleThreadTaskRunner>
+TaskSchedulerImpl::CreateSingleThreadTaskRunnerWithTraits(
+    const TaskTraits& traits) {
+  return GetWorkerPoolForTraits(traits)->CreateSingleThreadTaskRunnerWithTraits(
+      traits);
 }
 
 std::vector<const HistogramBase*> TaskSchedulerImpl::GetHistograms() const {