bluetooth: Clean up WebBluetoothServiceImpl when adapter is removed

content/browser/bluetooth/web_bluetooth_service_impl.cc

 // 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.
 
 #include "content/browser/bluetooth/web_bluetooth_service_impl.h"
 
 #include "base/thread_task_runner_handle.h"
 #include "content/browser/bluetooth/bluetooth_blacklist.h"
 #include "content/browser/bluetooth/bluetooth_dispatcher_host.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
@@ skipping 73 matching lines @@
     base::Closure closure) {
   binding_.set_connection_error_handler(closure);
 }
 
 void WebBluetoothServiceImpl::DidFinishNavigation(
     NavigationHandle* navigation_handle) {
   if (navigation_handle->HasCommitted() &&
       navigation_handle->GetRenderFrameHost() == render_frame_host_ &&
       !navigation_handle->IsSamePage()) {
     // After navigation we need to clear the frame's state.
-    characteristic_id_to_notify_session_.clear();
+    ClearState();
   }
 }
 
+void WebBluetoothServiceImpl::AdapterPresentChanged(
+    device::BluetoothAdapter* adapter,
+    bool present) {
+  if (!present) {
+    ClearState();
+  }
+}
+
 void WebBluetoothServiceImpl::GattCharacteristicValueChanged(
     device::BluetoothAdapter* adapter,
     device::BluetoothGattCharacteristic* characteristic,
     const std::vector<uint8_t>& value) {
   // TODO(ortuno): Only send characteristic value changed events for
   // characteristics that we've returned in the past. We can't yet do
   // this because WebBluetoothServiceImpl doesn't have direct access
   // to the list of returned characteristics.
   // https://crbug.com/508771
   if (BluetoothBlacklist::Get().IsExcluded(characteristic->GetUUID())) {
@@ skipping 261 matching lines @@
 void WebBluetoothServiceImpl::CrashRendererAndClosePipe(
     bad_message::BadMessageReason reason) {
   bad_message::ReceivedBadMessage(GetRenderProcessHost(), reason);
   binding_.Close();
 }
 
 url::Origin WebBluetoothServiceImpl::GetOrigin() {
   return render_frame_host_->GetLastCommittedOrigin();
 }
 
+void WebBluetoothServiceImpl::ClearState() {
+  characteristic_id_to_notify_session_.clear();
+}
+
 }  // namespace content