[scheduler] Add options to TaskQueue::InsertFence

third_party/WebKit/Source/platform/scheduler/base/work_queue_unittest.cc

Index: third_party/WebKit/Source/platform/scheduler/base/work_queue_unittest.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/base/work_queue_unittest.cc b/third_party/WebKit/Source/platform/scheduler/base/work_queue_unittest.cc
index aefd9d1f486a00654e6e8e4c73e6dae8998713b6..caff18230cfa2f8c85702d81185e925de36bebe3 100644
--- a/third_party/WebKit/Source/platform/scheduler/base/work_queue_unittest.cc
+++ b/third_party/WebKit/Source/platform/scheduler/base/work_queue_unittest.cc
@@ -359,6 +359,19 @@ TEST_F(WorkQueueTest, BlockedByFenceNewFenceUnblocks) {
   EXPECT_FALSE(work_queue_->BlockedByFence());
 }
 
+TEST_F(WorkQueueTest, InsertFenceAfterEnqueuing) {
+  work_queue_->Push(FakeTaskWithEnqueueOrder(2));
+  work_queue_->Push(FakeTaskWithEnqueueOrder(3));
+  work_queue_->Push(FakeTaskWithEnqueueOrder(4));
+  EXPECT_FALSE(work_queue_->BlockedByFence());
+
+  EXPECT_FALSE(work_queue_->InsertFence(1));
+  EXPECT_TRUE(work_queue_->BlockedByFence());
+
+  EnqueueOrder enqueue_order;
+  EXPECT_FALSE(work_queue_->GetFrontTaskEnqueueOrder(&enqueue_order));
+}
+
 }  // namespace internal
 }  // namespace scheduler
 }  // namespace blink