wifi_sync: add WifiConfigDelegate

components/wifi_sync/wifi_config_delegate_factory_chromeos.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 COMPONENTS_WIFI_SYNC_WIFI_CONFIG_DELEGATE_FACTORY_CHROMEOS_H_
+#define COMPONENTS_WIFI_SYNC_WIFI_CONFIG_DELEGATE_FACTORY_CHROMEOS_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+
+template <typename T> struct DefaultSingletonTraits;
+
+namespace content {
+class BrowserContext;
+}
+
+namespace wifi_sync {
+
+class WifiConfigDelegate;
+
+// Singleton that creates WifiConfigDelegateChromeOs instances.
+// Ownership of the created instance is passed to the caller of
+// BuildInstanceFor.
+class WifiConfigDelegateFactoryChromeOs {
+ public:
+  // Returns the singleton instance.
+  static WifiConfigDelegateFactoryChromeOs* GetInstance();
+
+  // Configures whether the factory will use chromeos::LoginState to
+  // determine the ChromeOS network profile that corresponds to a
+  // content::BrowserContext. If it is not possible to control
+  // LoginState when WifiCredentialSyncableServices are created (such
+  // as in some tests), call this method with false.
+  void SetUseLoginState(bool use_login_state);
+  // Returns a new WifiConfigDelegate, which will make changes to the
+  // ChromeOS network profile corresponding to |browser_context|. The
+  // caller must ensure that the returned delegate does not outlive
+  // the chromeos::internal::DBusServices singleton. (The simplest way
+  // to do so is to have the delegate owned by a KeyedService.)
+  scoped_ptr<WifiConfigDelegate> BuildInstanceFor(
+      content::BrowserContext* browser_context);
+
+ private:
+  friend struct DefaultSingletonTraits<WifiConfigDelegateFactoryChromeOs>;
+
+  WifiConfigDelegateFactoryChromeOs();
+  ~WifiConfigDelegateFactoryChromeOs();
+
+  // Whether or not we should use chromeos::LoginState to map
+  // content::BrowserContexts to ChromeOS network profiles.
+  bool use_login_state_;
+
+  DISALLOW_COPY_AND_ASSIGN(WifiConfigDelegateFactoryChromeOs);
+};
+
+}  // namespace wifi_sync
+
+#endif  // COMPONENTS_WIFI_SYNC_WIFI_CONFIG_DELEGATE_FACTORY_CHROMEOS_H_