Use GUID instead of ServicePath in networkingPrivate API

chromeos/network/favorite_state.cc

Index: chromeos/network/favorite_state.cc
diff --git a/chromeos/network/favorite_state.cc b/chromeos/network/favorite_state.cc
index 002ff4f463a7d1b7a72bd09b0d5abd5a431b07c5..daf981a2d714a64c1c0ec4d4c396f0ad265d41b7 100644
--- a/chromeos/network/favorite_state.cc
+++ b/chromeos/network/favorite_state.cc
@@ -63,6 +63,9 @@ bool FavoriteState::PropertyChanged(const std::string& key,
       NET_LOG_ERROR("Failed to parse " + key, path());
     }
     return true;
+  } else if (key == shill::kSecurityProperty) {
+    // Only used for GetSpecifier()
+    return GetStringValue(key, value, &security_);
   }
   return false;
 }
@@ -79,8 +82,21 @@ void FavoriteState::GetStateProperties(
                                             ui_data_.GetONCSourceAsString());
 }
 
-bool FavoriteState::IsFavorite() const {
-  // kTypeEthernetEap is always a favorite. We need this check because it does
+std::string FavoriteState::GetSpecifier() const {
+  if (type() == shill::kTypeWifi)
+    return name() + "_" + security_;
+  if (!name().empty())
+    return name();
+  return type();  // For unnamed networks such as ethernet.
+}
+
+void FavoriteState::SetGuid(const std::string& guid) {
+  DCHECK(guid_.empty());
+  guid_ = guid;
+}
+
+bool FavoriteState::IsInProfile() const {
+  // kTypeEthernetEap is always saved. We need this check because it does
   // not show up in the visible list, but its properties may not be available
   // when it first shows up in ServiceCompleteList. See crbug.com/355117.
   return !profile_path_.empty() || type() == shill::kTypeEthernetEap;