Revert of components/arc: implement multi advertising

device/bluetooth/dbus/fake_bluetooth_le_advertising_manager_client.cc

Index: device/bluetooth/dbus/fake_bluetooth_le_advertising_manager_client.cc
diff --git a/device/bluetooth/dbus/fake_bluetooth_le_advertising_manager_client.cc b/device/bluetooth/dbus/fake_bluetooth_le_advertising_manager_client.cc
index 6236ca78f0bac0ec3e93f013b209387a286b2f2a..c7fcf2594c04ab77ae914ec71480f5fcc6ccfc42 100644
--- a/device/bluetooth/dbus/fake_bluetooth_le_advertising_manager_client.cc
+++ b/device/bluetooth/dbus/fake_bluetooth_le_advertising_manager_client.cc
@@ -55,11 +55,11 @@
   if (iter == service_provider_map_.end()) {
     error_callback.Run(bluetooth_advertising_manager::kErrorInvalidArguments,
                        "Advertisement object not registered");
-  } else if (currently_registered_.size() >= kMaxBluezAdvertisements) {
+  } else if (!currently_registered_.value().empty()) {
     error_callback.Run(bluetooth_advertising_manager::kErrorFailed,
                        "Maximum advertisements reached");
   } else {
-    currently_registered_.push_back(advertisement_object_path);
+    currently_registered_ = advertisement_object_path;
     base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, callback);
   }
 }
@@ -76,19 +76,16 @@
     return;
   }
 
-  auto service_iter = service_provider_map_.find(advertisement_object_path);
-  auto reg_iter =
-      std::find(currently_registered_.begin(), currently_registered_.end(),
-                advertisement_object_path);
-
-  if (service_iter == service_provider_map_.end()) {
+  ServiceProviderMap::iterator iter =
+      service_provider_map_.find(advertisement_object_path);
+  if (iter == service_provider_map_.end()) {
     error_callback.Run(bluetooth_advertising_manager::kErrorDoesNotExist,
                        "Advertisement not registered");
-  } else if (reg_iter == currently_registered_.end()) {
+  } else if (advertisement_object_path != currently_registered_) {
     error_callback.Run(bluetooth_advertising_manager::kErrorDoesNotExist,
                        "Does not exist");
   } else {
-    currently_registered_.erase(reg_iter);
+    currently_registered_ = dbus::ObjectPath("");
     base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, callback);
   }
 }