Adding ThreadChecker validation to d'tors for protocol classes

remoting/protocol/audio_decode_scheduler.cc

 // Copyright 2016 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 "remoting/protocol/audio_decode_scheduler.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/task_runner_util.h"
 #include "remoting/codec/audio_decoder.h"
 #include "remoting/proto/audio.pb.h"
 #include "remoting/protocol/audio_stub.h"
 
 namespace remoting {
 namespace protocol {
 
 AudioDecodeScheduler::AudioDecodeScheduler(
     scoped_refptr<base::SingleThreadTaskRunner> audio_decode_task_runner,
     base::WeakPtr<protocol::AudioStub> audio_consumer)
     : audio_decode_task_runner_(audio_decode_task_runner),
       audio_consumer_(audio_consumer),
       weak_factory_(this) {}
 
 AudioDecodeScheduler::~AudioDecodeScheduler() {
+  DCHECK(thread_checker_.CalledOnValidThread());
   audio_decode_task_runner_->DeleteSoon(FROM_HERE, decoder_.release());
 }
 
 void AudioDecodeScheduler::Initialize(const protocol::SessionConfig& config) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(!decoder_);
   decoder_ = AudioDecoder::CreateAudioDecoder(config);
 }
 
 void AudioDecodeScheduler::ProcessAudioPacket(
@@ skipping 17 matching lines @@
   if (!packet || !audio_consumer_) {
     done.Run();
     return;
   }
 
   audio_consumer_->ProcessAudioPacket(std::move(packet), done);
 }
 
 }  // namespace protocol
 }  // namespace remoting