Refactor BluetoothDispatcher to use CurrentWorkerId everywhere.

content/child/bluetooth/bluetooth_dispatcher.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 "content/child/bluetooth/bluetooth_dispatcher.h"
 
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 62 matching lines @@
 BluetoothDispatcher* BluetoothDispatcher::GetOrCreateThreadSpecificInstance(
     ThreadSafeSender* thread_safe_sender) {
   if (g_dispatcher_tls.Pointer()->Get() == kHasBeenDeleted) {
     NOTREACHED() << "Re-instantiating TLS BluetoothDispatcher.";
     g_dispatcher_tls.Pointer()->Set(NULL);
   }
   if (g_dispatcher_tls.Pointer()->Get())
     return g_dispatcher_tls.Pointer()->Get();
 
   BluetoothDispatcher* dispatcher = new BluetoothDispatcher(thread_safe_sender);
-  if (WorkerTaskRunner::Instance()->CurrentWorkerId())
+  if (CurrentWorkerId())
     WorkerTaskRunner::Instance()->AddStopObserver(dispatcher);
   return dispatcher;
 }
 
 bool BluetoothDispatcher::Send(IPC::Message* msg) {
   return thread_safe_sender_->Send(msg);
 }
 
 void BluetoothDispatcher::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
@@ skipping 44 matching lines @@
                                                int request_id,
                                                BluetoothError error_type) {
   DCHECK(pending_requests_.Lookup(request_id)) << request_id;
   pending_requests_.Lookup(request_id)
       ->onError(new WebBluetoothError(
           WebBluetoothErrorFromBluetoothError(error_type), ""));
   pending_requests_.Remove(request_id);
 }
 
 }  // namespace content