Change EXPECT/ASSERT_DCHECK_DEATH macro to not expose the |regex| parameter.

base/task_scheduler/scheduler_worker_pool_impl_unittest.cc

Index: base/task_scheduler/scheduler_worker_pool_impl_unittest.cc
diff --git a/base/task_scheduler/scheduler_worker_pool_impl_unittest.cc b/base/task_scheduler/scheduler_worker_pool_impl_unittest.cc
index 4d560f3b57394fddaf575407ba3c17a660010d72..ed222e09e834de67e3540b14f6383ef3f41f1539 100644
--- a/base/task_scheduler/scheduler_worker_pool_impl_unittest.cc
+++ b/base/task_scheduler/scheduler_worker_pool_impl_unittest.cc
@@ -352,7 +352,7 @@ void ExpectIORestriction(IORestriction io_restriction, WaitableEvent* event) {
   if (io_restriction == IORestriction::ALLOWED) {
     ThreadRestrictions::AssertIOAllowed();
   } else {
-    EXPECT_DCHECK_DEATH({ ThreadRestrictions::AssertIOAllowed(); }, "");
+    EXPECT_DCHECK_DEATH({ ThreadRestrictions::AssertIOAllowed(); });
   }
 
   event->Signal();