Exempt the Service Thread from BLOCK_SHUTDOWN DCHECKs

base/task_scheduler/task_tracker_posix.cc

Index: base/task_scheduler/task_tracker_posix.cc
diff --git a/base/task_scheduler/task_tracker_posix.cc b/base/task_scheduler/task_tracker_posix.cc
index ef73a08a9233086839ff49414d11fcbadf2b57ea..0db2d55086c038b26105213746589dd3e2dd3059 100644
--- a/base/task_scheduler/task_tracker_posix.cc
+++ b/base/task_scheduler/task_tracker_posix.cc
@@ -7,7 +7,6 @@
 #include <utility>
 
 #include "base/files/file_descriptor_watcher_posix.h"
-#include "base/logging.h"
 
 namespace base {
 namespace internal {
@@ -22,5 +21,11 @@ void TaskTrackerPosix::PerformRunTask(std::unique_ptr<Task> task) {
   TaskTracker::PerformRunTask(std::move(task));
 }
 
+#if DCHECK_IS_ON()
+bool TaskTrackerPosix::IsExemptFromBlockingShutdownChecks() {
+  return service_thread_handle_.is_equal(PlatformThread::CurrentHandle());
+}
+#endif
+
 }  // namespace internal
 }  // namespace base