[Clean-up] Remove unnecessary default: NOTREACHED() case.

extensions/browser/api/bluetooth_socket/bluetooth_api_socket.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.
 
 #include "extensions/browser/api/bluetooth_socket/bluetooth_api_socket.h"
 
 #include "device/bluetooth/bluetooth_socket.h"
 #include "net/base/io_buffer.h"
 
 namespace {
@@ skipping 121 matching lines @@
   switch (reason) {
     case device::BluetoothSocket::kIOPending:
       error_reason = BluetoothApiSocket::kIOPending;
       break;
     case device::BluetoothSocket::kDisconnected:
       error_reason = BluetoothApiSocket::kDisconnected;
       break;
     case device::BluetoothSocket::kSystemError:
       error_reason = BluetoothApiSocket::kSystemError;
       break;
-    default:
-      NOTREACHED();
   }
   error_callback.Run(error_reason, message);
 }
 
 void BluetoothApiSocket::Send(scoped_refptr<net::IOBuffer> buffer,
                               int buffer_size,
                               const SendCompletionCallback& success_callback,
                               const ErrorCompletionCallback& error_callback) {
   DCHECK(content::BrowserThread::CurrentlyOn(kThreadId));
 
@@ skipping 34 matching lines @@
 
 // static
 void BluetoothApiSocket::OnSocketAcceptError(
     const ErrorCompletionCallback& error_callback,
     const std::string& message) {
   DCHECK(content::BrowserThread::CurrentlyOn(kThreadId));
   error_callback.Run(BluetoothApiSocket::kSystemError, message);
 }
 
 }  // namespace extensions