Migrate stdlib task queue to TaskQueueBase interface

Bug: webrtc:10191
Change-Id: I16e13b69dce7cafa545977e9ac253b6e57312690
Reviewed-on: https://webrtc-review.googlesource.com/c/123760
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26796}

api/task_queue/BUILD.gn

@@ -106,9 +106,9 @@ rtc_source_set("default_task_queue_factory_impl") {
     deps += [ "../../rtc_base:rtc_task_queue_win" ]
   } else {
     sources = [
-      "default_task_queue_factory_unimplemented.cc",
+      "default_task_queue_factory_stdlib.cc",
     ]
-    deps += [ "../../rtc_base:checks" ]
+    deps += [ "../../rtc_base:rtc_task_queue_stdlib" ]
   }
 }
 

api/task_queue/default_task_queue_factory_stdlib.cc

@@ -10,14 +10,12 @@
 #include <memory>
 
 #include "api/task_queue/task_queue_factory.h"
-#include "rtc_base/checks.h"
+#include "rtc_base/task_queue_stdlib.h"
 
 namespace webrtc {
 
 std::unique_ptr<TaskQueueFactory> CreateDefaultTaskQueueFactory() {
-  RTC_CHECK(false)
-      << "Default task queue is not implemented for current platform, "
-         "overwrite the task queue implementation by setting global factory.";
+  return CreateTaskQueueStdlibFactory();
 }
 
 }  // namespace webrtc