Remove DeviceMonitorLinux::WillDestroyCurrentMessageLoop().

extensions/shell/browser/shell_browser_main_parts.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 "extensions/shell/browser/shell_browser_main_parts.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/run_loop.h"
@@ skipping 230 matching lines @@
 
   oauth2_token_service_.reset();
   BrowserContextDependencyManager::GetInstance()->DestroyBrowserContextServices(
       browser_context_.get());
   extension_system_ = NULL;
   ExtensionsBrowserClient::Set(NULL);
   extensions_browser_client_.reset();
 
   desktop_controller_.reset();
 
+  // ShellDeviceClient must be shutdown when the FILE thread is still alive.
+  device_client_->Shutdown();
+
   storage_monitor::StorageMonitor::Destroy();
 
 #if defined(OS_CHROMEOS)
   audio_controller_.reset();
   chromeos::CrasAudioHandler::Shutdown();
 #endif
 
   user_pref_service_->CommitPendingWrite();
   user_pref_service_.reset();
   local_state_->CommitPendingWrite();
@@ skipping 24 matching lines @@
 }
 
 void ShellBrowserMainParts::CreateExtensionSystem() {
   DCHECK(browser_context_);
   extension_system_ = static_cast<ShellExtensionSystem*>(
       ExtensionSystem::Get(browser_context_.get()));
   extension_system_->InitForRegularProfile(true);
 }
 
 }  // namespace extensions