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/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h b/ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
deleted file mode 100644
index fd862889dfc607db6e9e4e3f64a04fd6621827d8..0000000000000000000000000000000000000000
--- a/ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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.
-
-#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"
-
-namespace ash {
-
-class ASH_EXPORT VirtualKeyboardObserver {
- public:
-  virtual ~VirtualKeyboardObserver() {}
-
-  // Notifies when the keyboard is suppressed.
-  virtual void OnKeyboardSuppressionChanged(bool suppressed) = 0;
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_SYSTEM_CHROMEOS_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_