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

ash/system/chromeos/network/vpn_list_view.cc

 // Copyright 2015 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/chromeos/network/vpn_list_view.h"
 
 #include <memory>
 #include <utility>
 #include <vector>
 
 #include "ash/common/system/tray/system_tray_delegate.h"
+#include "ash/common/system/tray/tray_constants.h"
 #include "ash/metrics/user_metrics_recorder.h"
 #include "ash/shell.h"
 #include "ash/system/chromeos/network/vpn_delegate.h"
 #include "ash/system/tray/hover_highlight_view.h"
-#include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_popup_label_button.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chromeos/network/network_connection_handler.h"
 #include "chromeos/network/network_handler.h"
 #include "chromeos/network/network_state.h"
 #include "chromeos/network/network_type_pattern.h"
@@ skipping 386 matching lines @@
     }
   }
 
   // Add providers without any configured networks, in the order that the
   // providers were returned by the extensions system.
   for (const VPNProvider& provider : providers)
     AddProviderAndNetworks(provider.key, provider.name, networks);
 }
 
 }  // namespace ash