mash: Move tray_constants.h and FixedSizedImageView to //ash/common

ash/system/user/user_card_view.cc

 // Copyright 2014 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/user_card_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/system/tray/system_tray_delegate.h"
+#include "ash/common/system/tray/tray_constants.h"
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_notifier.h"
-#include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_utils.h"
 #include "ash/system/user/rounded_image_view.h"
 #include "base/i18n/rtl.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/user_manager/user_info.h"
 #include "grit/ash_resources.h"
 #include "grit/ash_strings.h"
@@ skipping 428 matching lines @@
     SessionStateDelegate* delegate =
         Shell::GetInstance()->session_state_delegate();
     icon->SetImage(delegate->GetUserInfo(user_index)->GetImage(),
                    gfx::Size(kTrayAvatarSize, kTrayAvatarSize));
   }
   return icon;
 }
 
 }  // namespace tray
 }  // namespace ash