Reland: mash: Convert TrayBackgroundView to wm common types

ash/common/system/tray/tray_event_filter.cc

 // Copyright (c) 2012 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.
 
-#include "ash/system/tray/tray_event_filter.h"
+#include "ash/common/system/tray/tray_event_filter.h"
 
 #include "ash/common/shell_window_ids.h"
+#include "ash/common/system/tray/tray_background_view.h"
+#include "ash/common/system/tray/tray_bubble_wrapper.h"
 #include "ash/common/wm/container_finder.h"
 #include "ash/common/wm_lookup.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
-#include "ash/system/tray/tray_background_view.h"
-#include "ash/system/tray/tray_bubble_wrapper.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 
 TrayEventFilter::TrayEventFilter() {
 }
 
 TrayEventFilter::~TrayEventFilter() {
   DCHECK(wrappers_.empty());
 }
@@ skipping 68 matching lines @@
        iter != wrappers_.end(); ++iter) {
     trays.insert((*iter)->tray());
   }
   for (std::set<TrayBackgroundView*>::iterator iter = trays.begin();
        iter != trays.end(); ++iter) {
     (*iter)->ClickedOutsideBubble();
   }
 }
 
 }  // namespace ash