Changed DefaultAdapter to RunCallbackOnAdapterReady function.

chrome/browser/extensions/api/bluetooth/bluetooth_extension_function.cc

 // Copyright (c) 2012 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/extensions/api/bluetooth/bluetooth_extension_function.h"
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/api/bluetooth/bluetooth_api.h"
 #include "chrome/browser/extensions/api/bluetooth/bluetooth_event_router.h"
 #include "chrome/browser/profiles/profile.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_adapter_factory.h"
 
 namespace {
 
 const char kPlatformNotSupported[] =
     "This operation is not supported on your platform";
 
-scoped_refptr<device::BluetoothAdapter> GetAdapter(Profile* profile) {
+void RunCallbackOnAdapterReady(
+    const device::BluetoothAdapterFactory::AdapterCallback callback,
+    Profile* profile) {
   extensions::ExtensionBluetoothEventRouter* event_router =
       extensions::BluetoothAPI::Get(profile)->bluetooth_event_router();
-  return event_router->GetAdapter();
+  event_router->RunCallbackOnAdapterReady(callback);
 }
 
 }  // namespace
 
 namespace extensions {
 
 namespace api {
 
 BluetoothExtensionFunction::BluetoothExtensionFunction() {
 }
 
 BluetoothExtensionFunction::~BluetoothExtensionFunction() {
 }
 
 bool BluetoothExtensionFunction::RunImpl() {
-  scoped_refptr<device::BluetoothAdapter> adapter = GetAdapter(profile());
-  if (!adapter) {
+  bool is_bluetooth_supported =
+      device::BluetoothAdapterFactory::IsBluetoothSupported();
+  RunCallbackOnAdapterReady(base::Bind(&BluetoothExtensionFunction::DoWork,

[bryeung, 2013/01/08 22:24:27]

why do we try this when is_bluetooth_supported == false?

[youngki, 2013/01/09 15:12:03]

!! You are right. Done.

+                                       base::Unretained(this)),
+                            profile());
+  if (!is_bluetooth_supported) {
     SetError(kPlatformNotSupported);
     return false;
   }
-  DoWork(adapter);
   return true;
 }
 
 }  // namespace api
 
 }  // namespace extensions