Implemented Asynchronous Initialization of BluetoothAdapter.

device/bluetooth/bluetooth_adapter_factory.h

Index: device/bluetooth/bluetooth_adapter_factory.h
diff --git a/device/bluetooth/bluetooth_adapter_factory.h b/device/bluetooth/bluetooth_adapter_factory.h
index f2203aa7cbc6f5296abc24503370727ea775896b..87b0f1a53c945edd0a99dda303c149d44d0f20db 100644
--- a/device/bluetooth/bluetooth_adapter_factory.h
+++ b/device/bluetooth/bluetooth_adapter_factory.h
@@ -18,18 +18,21 @@ namespace device {
 // adapter" which may change depending on availability.
 class BluetoothAdapterFactory {
  public:
+  typedef base::Callback<void(scoped_refptr<BluetoothAdapter> adapter)>
+      AdapterCallback;

[keybuk, 2013/01/22 18:40:57]

newline afer this?

[youngki, 2013/01/22 20:38:13]

Done.

   // Returns true if the Bluetooth adapter is available for the current
   // platform.
   static bool IsBluetoothAdapterAvailable();
 
   // Runs the callback with the shared instance for the default adapter when the
   // adapter is available to be used.
-  static void RunCallbackOnAdapterReady(
-      const BluetoothAdapter::AdapterCallback& callback);
+  // Use this method to get an adapter fully initialized.
+  static void GetAdapter(const AdapterCallback& callback);

[keybuk, 2013/01/22 18:40:57]

Better comment would be something like:

Returns the shared instance of the default adapter, creating and initializing it
if necessary. |callback| is called with the adpter instance passed only once the
adapter is fully initialized and ready to use.

[youngki, 2013/01/22 20:38:13]

Done.

 
-  // Returns the shared instance of the adapter that has already been created.
+  // Returns the shared instance of the adapter that has already been created,
+  // but may or may not have been initialized.
   // It returns NULL if no adapter has been created at the time.
-  static scoped_refptr<BluetoothAdapter> GetAdapter();
+  static scoped_refptr<BluetoothAdapter> MaybeGetAdapter();
 
   // Creates an instance for a specific adapter at address |address|.
   static BluetoothAdapter* Create(const std::string& address);