Reland: chromeos: Convert ash VPNDelegate interface to mojo

ash/common/system/chromeos/network/vpn_delegate.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/common/system/chromeos/network/vpn_delegate.h"
-
-#include "base/logging.h"
-
-namespace ash {
-
-VPNProvider::VPNProvider() : third_party(false) {}
-
-VPNProvider::VPNProvider(const std::string& extension_id,
-                         const std::string& third_party_provider_name)
-    : third_party(true),
-      extension_id(extension_id),
-      third_party_provider_name(third_party_provider_name) {
-  DCHECK(!extension_id.empty());
-  DCHECK(!third_party_provider_name.empty());
-}
-
-bool VPNProvider::operator==(const VPNProvider& other) const {
-  return third_party == other.third_party &&
-         extension_id == other.extension_id &&
-         third_party_provider_name == other.third_party_provider_name;
-}
-
-VPNDelegate::Observer::~Observer() {}
-
-VPNDelegate::VPNDelegate() {
-  AddBuiltInProvider();
-}
-
-VPNDelegate::~VPNDelegate() {}
-
-bool VPNDelegate::HaveThirdPartyVPNProviders() const {
-  for (const VPNProvider& provider : vpn_providers_) {
-    if (provider.third_party)
-      return true;
-  }
-  return false;
-}
-
-void VPNDelegate::AddObserver(Observer* observer) {
-  observer_list_.AddObserver(observer);
-}
-
-void VPNDelegate::RemoveObserver(Observer* observer) {
-  observer_list_.RemoveObserver(observer);
-}
-
-void VPNDelegate::SetThirdPartyVpnProviders(
-    const std::vector<VPNProvider>& third_party_providers) {
-  vpn_providers_.clear();
-  vpn_providers_.reserve(third_party_providers.size() + 1);
-  AddBuiltInProvider();
-  // Append the extension-backed providers.
-  vpn_providers_.insert(vpn_providers_.end(), third_party_providers.begin(),
-                        third_party_providers.end());
-  NotifyObservers();
-}
-
-void VPNDelegate::NotifyObservers() {
-  for (auto& observer : observer_list_)
-    observer.OnVPNProvidersChanged();
-}
-
-void VPNDelegate::AddBuiltInProvider() {
-  // The VPNProvider() constructor generates the built-in provider and has no
-  // extension ID.
-  vpn_providers_.push_back(VPNProvider());
-}
-
-}  // namespace ash