Adding ThreadChecker validation to d'tors for host classes

remoting/host/security_key/security_key_ipc_client.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_ipc_client.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_message_macros.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "mojo/edk/embedder/named_platform_handle_utils.h"
 #include "remoting/host/chromoting_messages.h"
 #include "remoting/host/ipc_constants.h"
 #include "remoting/host/security_key/security_key_ipc_constants.h"
 
 namespace remoting {
 
 SecurityKeyIpcClient::SecurityKeyIpcClient()
     : named_channel_handle_(remoting::GetSecurityKeyIpcChannel()),
       weak_factory_(this) {}
 
-SecurityKeyIpcClient::~SecurityKeyIpcClient() {}
+SecurityKeyIpcClient::~SecurityKeyIpcClient() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+}
 
 bool SecurityKeyIpcClient::CheckForSecurityKeyIpcServerChannel() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   if (!channel_handle_.is_valid()) {
     channel_handle_ = mojo::edk::CreateClientHandle(named_channel_handle_);
   }
   return channel_handle_.is_valid();
 }
 
@@ skipping 158 matching lines @@
     return;
   }
   ipc_channel_.reset();
 
   if (connection_error_callback_) {
     base::ResetAndReturn(&connection_error_callback_).Run();
   }
 }
 
 }  // namespace remoting