ash: Rename tray_views.{h,cc} to tray_utils.{h,cc}

ash/system/session_length_limit/tray_session_length_limit.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/session_length_limit/tray_session_length_limit.h"
 
 #include <algorithm>
 
 #include "ash/shelf/shelf_types.h"
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_notification_view.h"
-#include "ash/system/tray/tray_views.h"
+#include "ash/system/tray/tray_utils.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "grit/ash_resources.h"
 #include "grit/ash_strings.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/font.h"
@@ skipping 362 matching lines @@
   }
 
   // Update the tray view last so that it can check whether the notification
   // view is currently visible or not.
   if (tray_view_)
     tray_view_->Update();
 }
 
 }  // namespace internal
 }  // namespace ash