bluetooth: Expose service data from BlueZ

device/bluetooth/bluez/bluetooth_device_bluez.h

 // Copyright 2013 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 DEVICE_BLUETOOTH_BLUEZ_BLUETOOTH_DEVICE_BLUEZ_H_
 #define DEVICE_BLUETOOTH_BLUEZ_BLUETOOTH_DEVICE_BLUEZ_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
+#include <unordered_set>
+#include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/sequenced_task_runner.h"
 #include "dbus/object_path.h"
 #include "device/bluetooth/bluetooth_common.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_export.h"
 #include "device/bluetooth/bluez/bluetooth_service_record_bluez.h"
@@ skipping 74 matching lines @@
   void Pair(device::BluetoothDevice::PairingDelegate* pairing_delegate,
             const base::Closure& callback,
             const ConnectErrorCallback& error_callback) override;
 
   // Returns the complete list of service records discovered for on this
   // device via SDP. If called before discovery is complete, it may return
   // an incomplete list and/or stale cached records.
   void GetServiceRecords(const GetServiceRecordsCallback& callback,
                          const GetServiceRecordsErrorCallback& error_callback);
 
+  // Called by BluetoothAdapterBlueZ to update BluetoothDevice->service_data_
+  // when receive DevicePropertyChanged event for the service data property.
+  // Note that
+  // 1) BlueZ persists all service data meaning that BlueZ won't remove service
+  //    data even when a device stops advertising service data.
+  // 2) BlueZ sends DevicePropertyChanged event separately for each UUID that
+  //    service data changed. Meaning that UpdateServiceData() might get called
+  //    multiple times when there are multiple UUIDs that service data changed.
+  // 3) When a device update service data for a UUID, BlueZ update data for that
+  //    UUID if it is already exist. If not BlueZ adds that data for UUID.
+  //    This means BlueZ won't remove service data even when a device stops
+  //    advertising service data for a UUID.
+  void UpdateServiceData();
+
   // Creates a pairing object with the given delegate |pairing_delegate| and
   // establishes it as the pairing context for this device. All pairing-related
   // method calls will be forwarded to this object until it is released.
   BluetoothPairingBlueZ* BeginPairing(
       BluetoothDevice::PairingDelegate* pairing_delegate);
 
   // Releases the current pairing object, any pairing-related method calls will
   // be ignored.
   void EndPairing();
 
@@ skipping 129 matching lines @@
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<BluetoothDeviceBlueZ> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothDeviceBlueZ);
 };
 
 }  // namespace bluez
 
 #endif  // DEVICE_BLUETOOTH_BLUEZ_BLUETOOTH_DEVICE_BLUEZ_H_