wifi_sync: add WifiConfigDelegate

components/wifi_sync/wifi_config_delegate.h

Index: components/wifi_sync/wifi_config_delegate.h
diff --git a/components/wifi_sync/wifi_config_delegate.h b/components/wifi_sync/wifi_config_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..74a701301675becbe54c1129b751c13dd4324e45
--- /dev/null
+++ b/components/wifi_sync/wifi_config_delegate.h
@@ -0,0 +1,27 @@
+// 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 COMPONENTS_WIFI_SYNC_WIFI_CONFIG_DELEGATE_H_
+#define COMPONENTS_WIFI_SYNC_WIFI_CONFIG_DELEGATE_H_
+
+namespace wifi_sync {
+
+class WifiCredential;
+
+// Interface for platform-specific delegates, which provide the ability
+// to configure local WiFi networks settings.
+class WifiConfigDelegate {
+ public:
+  virtual ~WifiConfigDelegate() {}
+
+  // Adds a local network configuration entry for a WiFi network using
+  // the properties of |network_credential|. If the entry already
+  // exists, the entry's passphrase is updated.
+  virtual void AddToLocalNetworks(
+      const WifiCredential& network_credential) = 0;
+};
+
+}  // namespace wifi_sync
+
+#endif  // COMPONENTS_WIFI_SYNC_WIFI_CONFIG_DELEGATE_H_