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

ash/system/user/tray_user.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/user/tray_user.h"
 
 #include <algorithm>
 #include <climits>
 #include <vector>
 
 #include "ash/shell.h"
 #include "ash/shell_delegate.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_item_view.h"
 #include "ash/system/tray/tray_popup_label_button.h"
 #include "ash/system/tray/tray_popup_label_button_border.h"
+#include "ash/system/tray/tray_utils.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/memory/scoped_vector.h"
 #include "base/string16.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "grit/ash_resources.h"
 #include "grit/ash_strings.h"
 #include "skia/ext/image_operations.h"
 #include "third_party/skia/include/core/SkCanvas.h"
@@ skipping 648 matching lines @@
   // Check for null to avoid crbug.com/150944.
   if (avatar_) {
     avatar_->SetImage(
         ash::Shell::GetInstance()->system_tray_delegate()->GetUserImage(),
         gfx::Size(kUserIconSize, kUserIconSize));
   }
 }
 
 }  // namespace internal
 }  // namespace ash