Chooser spinner should disappear as soon as one device shows up

chrome/browser/ui/bluetooth/bluetooth_chooser_controller.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 "chrome/browser/ui/bluetooth/bluetooth_chooser_controller.h"
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/net/referrer.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 134 matching lines @@
             false /* Refreshing options is complete */);
       }
       break;
   }
 }
 
 void BluetoothChooserController::AddDevice(const std::string& device_id,
                                            const base::string16& device_name) {
   device_names_and_ids_.push_back(std::make_pair(device_name, device_id));
   ++device_name_map_[device_name];
-  if (view())
+  if (view()) {
     view()->OnOptionAdded(device_names_and_ids_.size() - 1);
+    if (device_names_and_ids_.size() == 1)
+      view()->OnOptionAvailableDuringRefresh();
+  }
 }
 
 void BluetoothChooserController::RemoveDevice(const std::string& device_id) {
   for (auto it = device_names_and_ids_.begin();
        it != device_names_and_ids_.end(); ++it) {
     if (it->second == device_id) {
       size_t index = it - device_names_and_ids_.begin();
       DCHECK_GT(device_name_map_[it->first], 0);
       if (--device_name_map_[it->first] == 0)
         device_name_map_.erase(it->first);
       device_names_and_ids_.erase(it);
       if (view())
         view()->OnOptionRemoved(index);
       return;
     }
   }
 }
 
 void BluetoothChooserController::ClearAllDevices() {
   device_names_and_ids_.clear();
   device_name_map_.clear();
 }