chromeos: Move files in //ash/common to //ash, part 1

ash/system/session/logout_confirmation_dialog.h

Index: ash/system/session/logout_confirmation_dialog.h
diff --git a/ash/common/system/chromeos/session/logout_confirmation_dialog.h b/ash/system/session/logout_confirmation_dialog.h
similarity index 86%
rename from ash/common/system/chromeos/session/logout_confirmation_dialog.h
rename to ash/system/session/logout_confirmation_dialog.h
index fa3c4d42d352ca5cc673487f517afb0a9a807d66..04c07d00c4398aec9acfedbc50ac5d1d63f31b3a 100644
--- a/ash/common/system/chromeos/session/logout_confirmation_dialog.h
+++ b/ash/system/session/logout_confirmation_dialog.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_COMMON_SYSTEM_CHROMEOS_SESSION_LOGOUT_CONFIRMATION_DIALOG_H_
-#define ASH_COMMON_SYSTEM_CHROMEOS_SESSION_LOGOUT_CONFIRMATION_DIALOG_H_
+#ifndef ASH_SYSTEM_SESSION_LOGOUT_CONFIRMATION_DIALOG_H_
+#define ASH_SYSTEM_SESSION_LOGOUT_CONFIRMATION_DIALOG_H_
 
 #include "base/macros.h"
 #include "base/time/time.h"
@@ -54,4 +54,4 @@ class LogoutConfirmationDialog : public views::DialogDelegateView {
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_CHROMEOS_SESSION_LOGOUT_CONFIRMATION_DIALOG_H_
+#endif  // ASH_SYSTEM_SESSION_LOGOUT_CONFIRMATION_DIALOG_H_