Reland: chromeos: Convert ash VPNDelegate interface to mojo

ash/common/system/chromeos/network/vpn_delegate.h

-// 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.
-
-#ifndef ASH_COMMON_SYSTEM_CHROMEOS_NETWORK_VPN_DELEGATE_H_
-#define ASH_COMMON_SYSTEM_CHROMEOS_NETWORK_VPN_DELEGATE_H_
-
-#include <string>
-#include <vector>
-
-#include "ash/ash_export.h"
-#include "base/macros.h"
-#include "base/observer_list.h"
-
-namespace chromeos {
-class NetworkState;
-}
-
-namespace ash {
-
-// Describes a VPN provider.
-struct ASH_EXPORT VPNProvider {
-  struct Key {
-    // Constructs a key for the built-in VPN provider.
-    Key();
-
-    // Constructs a key for a third-party VPN provider.
-    explicit Key(const std::string& extension_id);
-
-    bool operator==(const Key& other) const;
-
-    // Indicates whether |network| belongs to this VPN provider.
-    bool MatchesNetwork(const chromeos::NetworkState& network) const;
-
-    // Whether this key represents a built-in or third-party VPN provider.
-    bool third_party;
-
-    // ID of the extension that implements this provider. Used for third-party
-    // VPN providers only.
-    std::string extension_id;
-  };
-
-  VPNProvider(const Key& key, const std::string& name);
-
-  bool operator==(const VPNProvider& other) const;
-
-  // Key that uniquely identifies this VPN provider.
-  Key key;
-
-  // Human-readable name.
-  std::string name;
-};
-
-// This delegate provides UI code in ash, e.g. |VPNListView|, with access to the
-// list of VPN providers enabled in the primary user's profile. The delegate
-// furthermore allows the UI code to request that a VPN provider show its "add
-// network" dialog.
-// TODO(jamescook): Rename this to VpnList as part of mojo conversion because it
-// won't be a delegate anymore.
-class ASH_EXPORT VPNDelegate {
- public:
-  // An observer that is notified whenever the list of VPN providers enabled in
-  // the primary user's profile changes.
-  class Observer {
-   public:
-    virtual void OnVPNProvidersChanged() = 0;
-
-   protected:
-    virtual ~Observer();
-
-   private:
-    DISALLOW_ASSIGN(Observer);
-  };
-
-  VPNDelegate();
-  virtual ~VPNDelegate();
-
-  const std::vector<VPNProvider>& vpn_providers() { return vpn_providers_; }
-
-  // Returns |true| if at least one third-party VPN provider is enabled in the
-  // primary user's profile, in addition to the built-in OpenVPN/L2TP provider.
-  bool HaveThirdPartyVPNProviders() const;
-
-  // Requests that the VPN provider identified by |key| show its "add network"
-  // dialog.
-  virtual void ShowAddPage(const VPNProvider::Key& key) = 0;
-
-  void AddObserver(Observer* observer);
-  void RemoveObserver(Observer* observer);
-
-  // Sets the list of extension-backed VPN providers. The list may be empty.
-  // Notifies observers. Public for testing.
-  // TODO(jamescook): Convert to mojo interface.
-  void SetThirdPartyVpnProviders(const std::vector<VPNProvider>& providers);
-
- private:
-  // Notify observers that the list of VPN providers enabled in the primary
-  // user's profile has changed.
-  void NotifyObservers();
-
-  // Adds the built-in OpenVPN/L2TP provider to |vpn_providers_|.
-  void AddBuiltInProvider();
-
-  // Cache of VPN providers, including the built-in OpenVPN/L2TP provider and
-  // other providers added by extensions in the primary user's profile.
-  std::vector<VPNProvider> vpn_providers_;
-
-  base::ObserverList<Observer> observer_list_;
-
-  DISALLOW_COPY_AND_ASSIGN(VPNDelegate);
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_SYSTEM_CHROMEOS_NETWORK_VPN_DELEGATE_H_