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

ash/system/overview/overview_button_tray.cc

Index: ash/system/overview/overview_button_tray.cc
diff --git a/ash/common/system/overview/overview_button_tray.cc b/ash/system/overview/overview_button_tray.cc
similarity index 96%
rename from ash/common/system/overview/overview_button_tray.cc
rename to ash/system/overview/overview_button_tray.cc
index c28d814dd6ffe63a28b7d2901866606108e14d4a..3e5f796bd21d159d349f048cb61c15da0fa301c5 100644
--- a/ash/common/system/overview/overview_button_tray.cc
+++ b/ash/system/overview/overview_button_tray.cc
@@ -2,17 +2,17 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ash/common/system/overview/overview_button_tray.h"
+#include "ash/system/overview/overview_button_tray.h"
 
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/shelf_constants.h"
-#include "ash/common/system/tray/system_tray_delegate.h"
-#include "ash/common/system/tray/tray_constants.h"
 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/common/wm/overview/window_selector_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/resources/vector_icons/vector_icons.h"
 #include "ash/strings/grit/ash_strings.h"
+#include "ash/system/tray/system_tray_delegate.h"
+#include "ash/system/tray/tray_constants.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/views/border.h"