Adding ThreadChecker validation to d'tors for host classes

remoting/host/security_key/security_key_message_handler.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/host/security_key/security_key_message_handler.h"
 
 #include <cstdint>
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "remoting/host/security_key/security_key_ipc_client.h"
 #include "remoting/host/security_key/security_key_ipc_constants.h"
 #include "remoting/host/security_key/security_key_message_reader_impl.h"
 #include "remoting/host/security_key/security_key_message_writer_impl.h"
 
 namespace remoting {
 
 SecurityKeyMessageHandler::SecurityKeyMessageHandler() {}
 
-SecurityKeyMessageHandler::~SecurityKeyMessageHandler() {}
+SecurityKeyMessageHandler::~SecurityKeyMessageHandler() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+}
 
 void SecurityKeyMessageHandler::Start(
     base::File message_read_stream,
     base::File message_write_stream,
     std::unique_ptr<SecurityKeyIpcClient> ipc_client,
     const base::Closure& error_callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(message_read_stream.IsValid());
   DCHECK(message_write_stream.IsValid());
   DCHECK(ipc_client);
@@ skipping 147 matching lines @@
   ipc_client_.reset();
   writer_.reset();
   reader_.reset();
 
   if (!error_callback_.is_null()) {
     base::ResetAndReturn(&error_callback_).Run();
   }
 }
 
 }  // namespace remoting