Add a path for content/ to open and control a Bluetooth chooser dialog.

content/browser/bluetooth/first_device_bluetooth_chooser.cc

+// Copyright 2015 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/first_device_bluetooth_chooser.h"
+
+namespace content {
+
+FirstDeviceBluetoothChooser::FirstDeviceBluetoothChooser(
+    const EventHandler& event_handler)
+    : event_handler_(event_handler) {}
+
+FirstDeviceBluetoothChooser::~FirstDeviceBluetoothChooser() {}
+
+void FirstDeviceBluetoothChooser::SetAdapterPresence(AdapterPresence presence) {
+  switch (presence) {
+    case AdapterPresence::ABSENT:
+    case AdapterPresence::POWERED_OFF:
+      // Without a user-visible dialog, if the adapter is off, there's no way to
+      // ask the user to turn it on again, so we should cancel.
+      event_handler_.Run(Event::CANCELLED, "");
+      break;
+    case AdapterPresence::POWERED_ON:
+      break;
+  }
+}
+
+void FirstDeviceBluetoothChooser::ShowDiscoveryState(DiscoveryState state) {
+  switch (state) {
+    case DiscoveryState::FAILED_TO_START:
+    case DiscoveryState::IDLE:
+      // Without a user-visible dialog, if discovery finishes without finding a
+      // device, we'll never find one, so we should cancel.
+      event_handler_.Run(Event::CANCELLED, "");
+      break;
+    case DiscoveryState::DISCOVERING:
+      break;
+  }
+}
+
+void FirstDeviceBluetoothChooser::AddDevice(const std::string& deviceId,
+                                            const base::string16& deviceName) {
+  event_handler_.Run(Event::SELECTED, deviceId);
+}
+
+}  // namespace content