Changed DefaultAdapter to RunCallbackOnAdapterReady function.

chrome/browser/chromeos/system/ash_system_tray_delegate.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/chromeos/system/ash_system_tray_delegate.h"
 
 #include <algorithm>
 
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
@@ skipping 252 matching lines @@
     input_method::GetInputMethodManager()->AddObserver(this);
 
     system::TimezoneSettings::GetInstance()->AddObserver(this);
 
     if (SystemKeyEventListener::GetInstance())
       SystemKeyEventListener::GetInstance()->AddCapsLockObserver(this);
 
     network_icon_->SetResourceColorTheme(NetworkMenuIcon::COLOR_LIGHT);
     network_icon_dark_->SetResourceColorTheme(NetworkMenuIcon::COLOR_DARK);
 
-    bluetooth_adapter_ = device::BluetoothAdapterFactory::DefaultAdapter();
+    device::BluetoothAdapterFactory::RunCallbackOnAdapterReady(
+        base::Bind(&SystemTrayDelegate::InitializeOnAdapterReady,
+                   ui_weak_ptr_factory_->GetWeakPtr()));
+  }
+
+  void InitializeOnAdapterReady(
+      scoped_refptr<device::BluetoothAdapter> adapter) {
+    bluetooth_adapter_ = adapter;
+    CHECK(bluetooth_adapter_);
     bluetooth_adapter_->AddObserver(this);
 
     local_state_registrar_.Init(g_browser_process->local_state());
 
     UpdateSessionStartTime();
     UpdateSessionLengthLimit();
 
     local_state_registrar_.Add(
         prefs::kSessionStartTime,
         base::Bind(&SystemTrayDelegate::UpdateSessionStartTime,
@@ skipping 1120 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(SystemTrayDelegate);
 };
 
 }  // namespace
 
 ash::SystemTrayDelegate* CreateSystemTrayDelegate() {
   return new chromeos::SystemTrayDelegate();
 }
 
 }  // namespace chromeos