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

ash/system/tray/tray_event_filter.h

Index: ash/system/tray/tray_event_filter.h
diff --git a/ash/common/system/tray/tray_event_filter.h b/ash/system/tray/tray_event_filter.h
similarity index 87%
rename from ash/common/system/tray/tray_event_filter.h
rename to ash/system/tray/tray_event_filter.h
index 8d7b50fcc098234c6ee1fd4892cb8d955700dc00..21e5ebe405900918c8036fd906413672f013ee43 100644
--- a/ash/common/system/tray/tray_event_filter.h
+++ b/ash/system/tray/tray_event_filter.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_TRAY_TRAY_EVENT_FILTER_H_
-#define ASH_COMMON_SYSTEM_TRAY_TRAY_EVENT_FILTER_H_
+#ifndef ASH_SYSTEM_TRAY_TRAY_EVENT_FILTER_H_
+#define ASH_SYSTEM_TRAY_TRAY_EVENT_FILTER_H_
 
 #include <set>
 
@@ -47,4 +47,4 @@ class TrayEventFilter : public views::PointerWatcher {
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_TRAY_TRAY_EVENT_FILTER_H_
+#endif  // ASH_SYSTEM_TRAY_TRAY_EVENT_FILTER_H_