mash: Migrate tray IME view to wm common types, move to //ash/common

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/chromeos/virtual_keyboard/virtual_keyboard_observer.h b/ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
similarity index 58%
rename from ash/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
rename to ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
index 1739c4a9fe7c951865ccef8aefafaa0dd1b91b91..fd862889dfc607db6e9e4e3f64a04fd6621827d8 100644
--- a/ash/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
+++ b/ash/common/system/chromeos/virtual_keyboard/virtual_keyboard_observer.h
@@ -2,11 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_SYSTEM_CHROMEOS_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_
-#define ASH_SYSTEM_CHROMEOS_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"
 
+namespace ash {
+
 class ASH_EXPORT VirtualKeyboardObserver {
  public:
   virtual ~VirtualKeyboardObserver() {}
@@ -15,4 +17,6 @@ class ASH_EXPORT VirtualKeyboardObserver {
   virtual void OnKeyboardSuppressionChanged(bool suppressed) = 0;
 };
 
-#endif  // ASH_SYSTEM_CHROMEOS_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_
+}  // namespace ash
+
+#endif  // ASH_COMMON_SYSTEM_CHROMEOS_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_OBSERVER_H_