arc: bluetooth: Implement set discoverable state

components/arc/bluetooth/arc_bluetooth_bridge.h

 // Copyright 2016 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 COMPONENTS_ARC_BLUETOOTH_ARC_BLUETOOTH_BRIDGE_H_
 #define COMPONENTS_ARC_BLUETOOTH_ARC_BLUETOOTH_BRIDGE_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 #include <unordered_map>
+#include <unordered_set>
 #include <vector>
 
 #include "base/callback.h"
+#include "base/timer/timer.h"
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/arc_service.h"
 #include "components/arc/common/bluetooth.mojom.h"
 #include "components/arc/instance_holder.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_adapter_factory.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_discovery_session.h"
 #include "device/bluetooth/bluetooth_local_gatt_service.h"
 #include "device/bluetooth/bluetooth_remote_gatt_characteristic.h"
@@ skipping 327 matching lines @@
 
   // Common code for OnCharacteristicWriteRequest and OnDescriptorWriteRequest
   template <class LocalGattAttribute>
   void OnGattAttributeWriteRequest(const device::BluetoothDevice* device,
                                    const LocalGattAttribute* attribute,
                                    const std::vector<uint8_t>& value,
                                    int offset,
                                    const base::Closure& success_callback,
                                    const ErrorCallback& error_callback);
 
+  void OnSetDiscoverable(bool discoverable, bool success, uint32_t timeout);
+  void SetDiscoverable(bool discoverable, uint32_t timeout);
+
   bool CalledOnValidThread();
 
   mojo::Binding<mojom::BluetoothHost> binding_;
 
   scoped_refptr<bluez::BluetoothAdapterBlueZ> bluetooth_adapter_;
   scoped_refptr<device::BluetoothAdvertisement> advertisment_;
   std::unique_ptr<device::BluetoothDiscoverySession> discovery_session_;
   std::unordered_map<std::string,
                      std::unique_ptr<device::BluetoothGattNotifySession>>
       notification_session_;
   // Map from Android int handle to Chrome (BlueZ) string identifier.
   std::unordered_map<int32_t, std::string> gatt_identifier_;
   // Map from Chrome (BlueZ) string identifier to android int handle.
   std::unordered_map<std::string, int32_t> gatt_handle_;
   // Store last GattCharacteristic added to each GattService for GattServer.
   std::unordered_map<int32_t, int32_t> last_characteristic_;
   // Monotonically increasing value to use as handle to give to Android side.
   int32_t gatt_server_attribute_next_handle_ = 0;
   // Keeps track of all devices which initiated a GATT connection to us.
   std::unordered_set<std::string> gatt_connection_cache_;
+  // Timer to turn adapter discoverable off.
+  base::OneShotTimer discoverable_off_timer_;
 
   base::ThreadChecker thread_checker_;
 
   // WeakPtrFactory to use for callbacks.
   base::WeakPtrFactory<ArcBluetoothBridge> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcBluetoothBridge);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_BLUETOOTH_ARC_BLUETOOTH_BRIDGE_H_