Implement WebFrameScheduler and WebPageScheduler

components/scheduler/child/scheduler_helper_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/scheduler/child/scheduler_helper.h"
 
 #include "base/callback.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "cc/test/ordered_simple_task_runner.h"
 #include "components/scheduler/child/scheduler_task_runner_delegate_for_test.h"
@@ skipping 165 matching lines @@
 
   scheduler_helper_->ControlAfterWakeUpTaskRunner()->PostTask(
       FROM_HERE, base::Bind(&NopTask));
 
   EXPECT_CALL(observer, WillProcessTask(_)).Times(0);
   EXPECT_CALL(observer, DidProcessTask(_)).Times(0);
   scheduler_helper_->ControlAfterWakeUpTaskRunner()->PumpQueue();
   RunUntilIdle();
 }
 
+namespace {
+class MockObserver : public SchedulerHelper::Observer {
+ public:
+  MOCK_METHOD1(OnUnregisterTaskQueue,
+               void(const scoped_refptr<TaskQueue>& queue));
+};
+}  // namespace
+
+TEST_F(SchedulerHelperTest, OnUnregisterTaskQueue) {
+  MockObserver observer;
+  scheduler_helper_->SetQueueObserver(&observer);
+
+  scoped_refptr<TaskQueue> task_queue =
+      scheduler_helper_->NewTaskQueue(TaskQueue::Spec("test_queue"));
+
+  EXPECT_CALL(observer, OnUnregisterTaskQueue(_)).Times(1);
+  task_queue->UnregisterTaskQueue();
+
+  // Tidy up.
+  scheduler_helper_->SetQueueObserver(nullptr);
+}
+
 }  // namespace scheduler