device/bluetooth: Send GattServiceChanged event for new Chrc. properties.

device/bluetooth/bluetooth_remote_gatt_service_chromeos.cc

 // 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 "device/bluetooth/bluetooth_remote_gatt_service_chromeos.h"
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "chromeos/dbus/bluetooth_gatt_service_client.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
@@ skipping 232 matching lines @@
   DCHECK(characteristic->object_path() == object_path);
   characteristics_.erase(iter);
 
   FOR_EACH_OBSERVER(device::BluetoothGattService::Observer, observers_,
                     GattCharacteristicRemoved(this, characteristic));
   NotifyServiceChanged();
 
   delete characteristic;
 }
 
+void BluetoothRemoteGattServiceChromeOS::GattCharacteristicPropertyChanged(
+    const dbus::ObjectPath& object_path,
+    const std::string& property_name) {
+  if (characteristics_.find(object_path) == characteristics_.end()) {
+    VLOG(2) << "Properties of unknown characteristic changed";
+    return;
+  }
+
+  // We may receive a property changed event in certain cases, e.g. when the
+  // characteristic "Flags" property has been updated with values from the
+  // "Characteristic Extended Properties" descriptor. In this case, kick off
+  // a service changed observer event to let observers refresh the
+  // characteristics.
+  BluetoothGattCharacteristicClient::Properties* properties =
+      DBusThreadManager::Get()->GetBluetoothGattCharacteristicClient()->
+          GetProperties(object_path);
+  DCHECK(properties);
+  if (property_name != properties->flags.name())
+    return;
+
+  NotifyServiceChanged();
+}
+
 }  // namespace chromeos