bluetooth: Add missing return when bluetooth not supported.

content/browser/bluetooth/bluetooth_device_chooser_controller.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/bluetooth_device_chooser_controller.h"
 
 #include <set>
 #include <string>
 #include <unordered_set>
 
@@ skipping 294 matching lines @@
                  base::Unretained(this));
 
   if (WebContentsDelegate* delegate = web_contents_->GetDelegate()) {
     chooser_ = delegate->RunBluetoothChooser(render_frame_host_,
                                              chooser_event_handler);
   }
 
   if (!chooser_.get()) {
     PostErrorCallback(
         blink::mojom::WebBluetoothError::WEB_BLUETOOTH_NOT_SUPPORTED);
+    return;
   }
 
   if (!chooser_->CanAskForScanningPermission()) {
     VLOG(1) << "Closing immediately because Chooser cannot obtain permission.";
     OnBluetoothChooserEvent(BluetoothChooser::Event::DENIED_PERMISSION,
                             "" /* device_address */);
     return;
   }
 
   PopulateConnectedDevices();
@@ skipping 162 matching lines @@
 
 void BluetoothDeviceChooserController::PostErrorCallback(
     blink::mojom::WebBluetoothError error) {
   if (!base::ThreadTaskRunnerHandle::Get()->PostTask(
           FROM_HERE, base::Bind(error_callback_, error))) {
     LOG(WARNING) << "No TaskRunner.";
   }
 }
 
 }  // namespace content