Add the COM STA Task Runner

base/task_scheduler/scheduler_single_thread_task_runner_manager.h

Index: base/task_scheduler/scheduler_single_thread_task_runner_manager.h
diff --git a/base/task_scheduler/scheduler_single_thread_task_runner_manager.h b/base/task_scheduler/scheduler_single_thread_task_runner_manager.h
index 6fbad4bb1d0e7ef5a64a843a65c4118c48899b63..397e15f7f9aaf5066f80875fc36f395470d2c7da 100644
--- a/base/task_scheduler/scheduler_single_thread_task_runner_manager.h
+++ b/base/task_scheduler/scheduler_single_thread_task_runner_manager.h
@@ -40,13 +40,26 @@ class BASE_EXPORT SchedulerSingleThreadTaskRunnerManager final {
   scoped_refptr<SingleThreadTaskRunner> CreateSingleThreadTaskRunnerWithTraits(
       const TaskTraits& traits);
 
+#if defined(OS_WIN)
+  scoped_refptr<SingleThreadTaskRunner> CreateCOMSTATaskRunnerWithTraits(
+      const TaskTraits& traits);
+#endif
+
   void JoinForTesting();
 
  private:
   class SchedulerSingleThreadTaskRunner;
 
+  enum DelegateType {

[fdoray, 2017/03/21 15:23:12]

enum class

[robliao, 2017/03/21 20:00:20]

Done.

+    REGULAR,

[gab, 2017/03/21 21:09:34]

How about "DEFAULT"? Sounds more natural to me than "REGULAR"

[robliao, 2017/03/21 22:25:32]

sgtm. Done.

+#if defined(OS_WIN)
+    COM_STA,
+#endif
+  };
+
   SchedulerWorker* CreateAndRegisterSchedulerWorker(
-      const SchedulerWorkerPoolParams& params);
+      const SchedulerWorkerPoolParams& params,
+      DelegateType delegate_type);
 
   void UnregisterSchedulerWorker(SchedulerWorker* worker);