Move tray code from ui/chromeos/network/

ui/chromeos/network/network_list_delegate.h

-// 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.
-
-#ifndef UI_CHROMEOS_NETWORK_NETWORK_LIST_DELEGATE_H_
-#define UI_CHROMEOS_NETWORK_NETWORK_LIST_DELEGATE_H_
-
-#include "ui/chromeos/ui_chromeos_export.h"
-
-namespace chromeos {
-class NetworkState;
-class NetworkTypePattern;
-}
-
-namespace views {
-class Label;
-class View;
-}
-
-namespace ui {
-
-struct NetworkInfo;
-
-class UI_CHROMEOS_EXPORT NetworkListDelegate {
- public:
-  virtual ~NetworkListDelegate() {}
-
-  // Creates and returns a View with the information in |info|.
-  virtual views::View* CreateViewForNetwork(const NetworkInfo& info) = 0;
-
-  // Returns true if |view| is currently under the cursor. Note that |view| is
-  // guaranteed to be a View returned from |CreateViewForNetwork()|.
-  virtual bool IsViewHovered(views::View* view) = 0;
-
-  // Returns the type of network this list should use.
-  virtual chromeos::NetworkTypePattern GetNetworkTypePattern() const = 0;
-
-  // Updates |view| with the information in |info|. Note that |view| is
-  // guaranteed to be a View returned from |CreateViewForNetwork()|.
-  virtual void UpdateViewForNetwork(views::View* view,
-                                    const NetworkInfo& info) = 0;
-
-  // Creates a Label to be displayed in the list to present some information
-  // (e.g. unavailability of network etc.).
-  virtual views::Label* CreateInfoLabel() = 0;
-
-  // Called when the user clicks on an entry representing a network in the list.
-  virtual void OnNetworkEntryClicked(views::View* sender) = 0;
-
-  // Called when the user clicks on a "Join Other" button.
-  virtual void OnOtherWifiClicked() = 0;
-
-  virtual void RelayoutScrollList() = 0;
-};
-
-}  // namespace ui
-
-#endif  // UI_CHROMEOS_NETWORK_NETWORK_LIST_DELEGATE_H_