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

ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h

Index: ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
diff --git a/ash/system/virtual_keyboard/virtual_keyboard_observer.h b/ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
similarity index 64%
rename from ash/system/virtual_keyboard/virtual_keyboard_observer.h
rename to ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
index f44ce0633b67784ef99eeb2a2b7dc78b538e568c..fd862889dfc607db6e9e4e3f64a04fd6621827d8 100644
--- a/ash/system/virtual_keyboard/virtual_keyboard_observer.h
+++ b/ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.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_SYSTEM_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_
-#define ASH_SYSTEM_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_
+#ifndef ASH_COMMON_SYSTEM_CHROMEOS_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_
+#define ASH_COMMON_SYSTEM_CHROMEOS_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_
 
 #include "ash/ash_export.h"
 
@@ -19,4 +19,4 @@ class ASH_EXPORT VirtualKeyboardObserver {
 
 }  // namespace ash
 
-#endif  // ASH_SYSTEM_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_
+#endif  // ASH_COMMON_SYSTEM_CHROMEOS_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_