components: add wifi_sync component

components/wifi_sync/network_state_helper_chromeos.cc

Index: components/wifi_sync/network_state_helper_chromeos.cc
diff --git a/components/wifi_sync/network_state_helper_chromeos.cc b/components/wifi_sync/network_state_helper_chromeos.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c962772508bd7e0ef588f39232d67a08eda8fd10
--- /dev/null
+++ b/components/wifi_sync/network_state_helper_chromeos.cc
@@ -0,0 +1,53 @@
+// 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.
+
+#include "components/wifi_sync/network_state_helper_chromeos.h"
+
+#include "base/logging.h"
+#include "chromeos/network/network_state.h"
+#include "chromeos/network/network_state_handler.h"
+#include "components/wifi_sync/wifi_credential.h"
+#include "components/wifi_sync/wifi_security_class.h"
+
+namespace wifi_sync {
+
+WifiCredential::CredentialSet GetWifiCredentialsForShillProfile(
+    chromeos::NetworkStateHandler* network_state_handler,
+    const std::string& shill_profile_path) {
+  if (!network_state_handler) {
+    LOG(ERROR) << "network_state_handler is null";
+    return WifiCredential::MakeSet();
+  }
+
+  chromeos::NetworkStateHandler::NetworkStateList networks;
+  network_state_handler->GetNetworkListByType(
+      chromeos::NetworkTypePattern::WiFi(),
+      true,  /* configured_only */
+      false,  /* visible_only */
+      0,  /* unlimited result size */
+      &networks);
+
+  auto credentials(WifiCredential::MakeSet());
+  for (const chromeos::NetworkState* network : networks) {
+    DCHECK(network);
+
+    if (network->profile_path() != shill_profile_path) {
+      continue;
+    }
+
+    // TODO(quiche): Switch away from network->security(), once we have
+    // a security_class() field in NetworkState.
+    //
+    // TODO(quiche): Fill in the actual passphrase via an asynchronous
+    // call to a chromeos::NetworkConfigurationHandler instance's
+    // GetProperties method.
+    credentials.insert(
+        WifiCredential(network->raw_ssid(),
+                       WifiSecurityClassFromShillString(network->security()),
+                       ""  /* empty passphrase */));
+  }
+  return credentials;
+}
+
+}  // namespace wifi_sync