bluetooth: android: register for adapter on/off events.

content/browser/bluetooth/bluetooth_dispatcher_host.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.
 
 // ID Not In Map Note:
 // A service, characteristic, or descriptor ID not in the corresponding
 // BluetoothDispatcherHost map [service_to_device_, characteristic_to_service_,
 // descriptor_to_characteristic_] implies a hostile renderer because a renderer
 // obtains the corresponding ID from this class and it will be added to the map
 // at that time.
@@ skipping 499 matching lines @@
     device::BluetoothAdapter* adapter,
     bool powered) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   const BluetoothChooser::AdapterPresence presence =
       powered ? BluetoothChooser::AdapterPresence::POWERED_ON
               : BluetoothChooser::AdapterPresence::POWERED_OFF;
   for (IDMap<RequestDeviceSession, IDMapOwnPointer>::iterator iter(
            &request_device_sessions_);
        !iter.IsAtEnd(); iter.Advance()) {
     RequestDeviceSession* session = iter.GetCurrentValue();
+
+    // Stop ongoing discovery session if power is off.
+    if (!powered && session->discovery_session) {
+      StopDiscoverySession(std::move(session->discovery_session));
+    }
+
     if (session->chooser)
       session->chooser->SetAdapterPresence(presence);
   }
+
+  // Stop the timer so that we don't change the state of the chooser
+  // when timer expires.
+  if (!powered) {
+    discovery_session_timer_.Stop();
+  }
 }
 
 void BluetoothDispatcherHost::DeviceAdded(device::BluetoothAdapter* adapter,
                                           device::BluetoothDevice* device) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   VLOG(1) << "Adding device to all choosers: " << device->GetAddress();
   for (IDMap<RequestDeviceSession, IDMapOwnPointer>::iterator iter(
            &request_device_sessions_);
        !iter.IsAtEnd(); iter.Advance()) {
     RequestDeviceSession* session = iter.GetCurrentValue();
@@ skipping 1008 matching lines @@
 
 bool BluetoothDispatcherHost::CanFrameAccessCharacteristicInstance(
     int frame_routing_id,
     const std::string& characteristic_instance_id) {
   return QueryCacheForCharacteristic(GetOrigin(frame_routing_id),
                                      characteristic_instance_id)
              .outcome != CacheQueryOutcome::BAD_RENDERER;
 }
 
 }  // namespace content