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()
+    : ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
 }
 
 BluetoothExtensionFunction::~BluetoothExtensionFunction() {
 }
 
 bool BluetoothExtensionFunction::RunImpl() {
-  scoped_refptr<device::BluetoothAdapter> adapter = GetAdapter(profile());
-  if (!adapter) {
+  if (!device::BluetoothAdapterFactory::IsBluetoothSupported()) {
     SetError(kPlatformNotSupported);
     return false;
   }
+  RunCallbackOnAdapterReady(
+      base::Bind(&BluetoothExtensionFunction::RunOnAdapterReady,
+                 weak_ptr_factory_.GetWeakPtr()),
+      profile());
+  return true;
+}
+
+void BluetoothExtensionFunction::RunOnAdapterReady(
+    scoped_refptr<device::BluetoothAdapter> adapter) {
   DoWork(adapter);
-  return true;
 }
 
 }  // namespace api
 
 }  // namespace extensions