cros: Remove OS_CHROMEOS ifdefs in ash/common

ash/common/shutdown_controller.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 "ash/common/shutdown_controller.h"
 
 #include "ash/common/shell_delegate.h"
 #include "ash/common/wm_shell.h"
-
-#if defined(OS_CHROMEOS)
 #include "base/sys_info.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager_client.h"
-#endif
 
 namespace ash {
 
 ShutdownController::ShutdownController() {}
 
 ShutdownController::~ShutdownController() {}
 
 void ShutdownController::ShutDownOrReboot() {
-#if defined(OS_CHROMEOS)
-  if (base::SysInfo::IsRunningOnChromeOS()) {
-    // Power manager handles shutdown on Chrome OS hardware.
-    using chromeos::DBusThreadManager;
-    if (reboot_on_shutdown_)
-      DBusThreadManager::Get()->GetPowerManagerClient()->RequestRestart();
-    else
-      DBusThreadManager::Get()->GetPowerManagerClient()->RequestShutdown();
+  // For developers on Linux desktop just exit the app.
+  if (!base::SysInfo::IsRunningOnChromeOS()) {
+    WmShell::Get()->delegate()->Exit();
     return;
   }
-#endif  // defined(OS_CHROMEOS)
 
-  // On Windows and on Linux desktop just exit.
-  WmShell::Get()->delegate()->Exit();
+  // On real Chrome OS hardware the power manager handles shutdown.
+  using chromeos::DBusThreadManager;
+  if (reboot_on_shutdown_)
+    DBusThreadManager::Get()->GetPowerManagerClient()->RequestRestart();
+  else
+    DBusThreadManager::Get()->GetPowerManagerClient()->RequestShutdown();
 }
 
 void ShutdownController::SetRebootOnShutdown(bool reboot_on_shutdown) {
   reboot_on_shutdown_ = reboot_on_shutdown;
 }
 
 void ShutdownController::BindRequest(mojom::ShutdownControllerRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 }  // namespace ash