Make ThreadTestHelper sequence-friendly.

base/test/thread_test_helper.cc

Index: base/test/thread_test_helper.cc
diff --git a/base/test/thread_test_helper.cc b/base/test/thread_test_helper.cc
index 38edc9d7f45fe7b8cb14c0582f0887b406196bb5..037de2b484a42766db36068c224795e9b6dc5753 100644
--- a/base/test/thread_test_helper.cc
+++ b/base/test/thread_test_helper.cc
@@ -13,15 +13,15 @@
 namespace base {
 
 ThreadTestHelper::ThreadTestHelper(
-    scoped_refptr<SingleThreadTaskRunner> target_thread)
+    scoped_refptr<SequencedTaskRunner> target_sequence)
     : test_result_(false),
-      target_thread_(std::move(target_thread)),
+      target_sequence_(std::move(target_sequence)),
       done_event_(WaitableEvent::ResetPolicy::AUTOMATIC,
                   WaitableEvent::InitialState::NOT_SIGNALED) {}
 
 bool ThreadTestHelper::Run() {
-  if (!target_thread_->PostTask(
-          FROM_HERE, base::BindOnce(&ThreadTestHelper::RunInThread, this))) {
+  if (!target_sequence_->PostTask(
+          FROM_HERE, base::BindOnce(&ThreadTestHelper::RunOnSequence, this))) {
     return false;
   }
   base::ThreadRestrictions::ScopedAllowWait allow_wait;
@@ -33,7 +33,7 @@ void ThreadTestHelper::RunTest() { set_test_result(true); }
 
 ThreadTestHelper::~ThreadTestHelper() {}
 
-void ThreadTestHelper::RunInThread() {
+void ThreadTestHelper::RunOnSequence() {
   RunTest();
   done_event_.Signal();
 }