scheduler: Remove task observer shenanigans

components/scheduler/test/lazy_scheduler_message_loop_delegate_for_tests.cc

 // Copyright 2015 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/test/lazy_scheduler_message_loop_delegate_for_tests.h"
 
 namespace scheduler {
 
 // static
 scoped_refptr<LazySchedulerMessageLoopDelegateForTests>
@@ skipping 15 matching lines @@
 }
 
 base::MessageLoop* LazySchedulerMessageLoopDelegateForTests::EnsureMessageLoop()
     const {
   if (message_loop_)
     return message_loop_;
   DCHECK(RunsTasksOnCurrentThread());
   message_loop_ = base::MessageLoop::current();
   DCHECK(message_loop_);
   original_task_runner_ = message_loop_->task_runner();
-  for (auto& observer : pending_observers_) {
-    message_loop_->AddTaskObserver(observer);
-  }
-  pending_observers_.clear();
   if (pending_task_runner_)
     message_loop_->SetTaskRunner(pending_task_runner_.Pass());
   return message_loop_;
 }
 
 void LazySchedulerMessageLoopDelegateForTests::SetDefaultTaskRunner(
     scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
   if (!HasMessageLoop()) {
     pending_task_runner_ = task_runner.Pass();
     return;
@@ skipping 29 matching lines @@
 
 bool LazySchedulerMessageLoopDelegateForTests::RunsTasksOnCurrentThread()
     const {
   return thread_id_ == base::PlatformThread::CurrentId();
 }
 
 bool LazySchedulerMessageLoopDelegateForTests::IsNested() const {
   return EnsureMessageLoop()->IsNested();
 }
 
-void LazySchedulerMessageLoopDelegateForTests::AddTaskObserver(
-    base::MessageLoop::TaskObserver* task_observer) {
-  if (!HasMessageLoop()) {
-    pending_observers_.insert(task_observer);
-    return;
-  }
-  EnsureMessageLoop()->AddTaskObserver(task_observer);
-}
-
-void LazySchedulerMessageLoopDelegateForTests::RemoveTaskObserver(
-    base::MessageLoop::TaskObserver* task_observer) {
-  if (!HasMessageLoop()) {
-    pending_observers_.erase(task_observer);
-    return;
-  }
-  EnsureMessageLoop()->RemoveTaskObserver(task_observer);
-}
-
 }  // namespace scheduler