Remove rtc::QueuedTask alias, use webrtc::QueuedTask directly

Use absl::WrapUnique/absl::make_unique to create the queued tasks.

Bug: webrtc:10191
Change-Id: I8f47a60cb326b0fc361c7f0e338b25373d39937c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/126525
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27063}
diff --git a/modules/utility/source/process_thread_impl_unittest.cc b/modules/utility/source/process_thread_impl_unittest.cc
index 013ef52..aa71243 100644
--- a/modules/utility/source/process_thread_impl_unittest.cc
+++ b/modules/utility/source/process_thread_impl_unittest.cc
@@ -11,10 +11,10 @@
 #include <memory>
 #include <utility>
 
+#include "api/task_queue/queued_task.h"
 #include "modules/include/module.h"
 #include "modules/utility/source/process_thread_impl.h"
 #include "rtc_base/location.h"
-#include "rtc_base/task_queue.h"
 #include "rtc_base/time_utils.h"
 #include "test/gmock.h"
 #include "test/gtest.h"
@@ -40,7 +40,7 @@
   MOCK_METHOD1(ProcessThreadAttached, void(ProcessThread*));
 };
 
-class RaiseEventTask : public rtc::QueuedTask {
+class RaiseEventTask : public QueuedTask {
  public:
   RaiseEventTask(rtc::Event* event) : event_(event) {}
   bool Run() override {