chrome.bluetooth API improvements.

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 3b6a2c27ea5cbe417a46a3b8432c51d3d1b053c5..1f07140f942494b4d4da3ac7f4fd479d70c70eef 100644
--- a/device/bluetooth/bluetooth_adapter_factory.h
+++ b/device/bluetooth/bluetooth_adapter_factory.h
@@ -18,9 +18,14 @@ namespace device {
 // adapter" which may change depending on availability.
 class BluetoothAdapterFactory {
  public:
+  typedef base::Callback<void(BluetoothAdapter* adapter)> AdapterInitializer;
   typedef base::Callback<void(scoped_refptr<BluetoothAdapter> adapter)>
       AdapterCallback;
 
+  // Sets a global initializer to run just after the default adapter instance is
+  // created.
+  static void SetAdapterInitializer(AdapterInitializer initializer);
+
   // Returns true if the Bluetooth adapter is available for the current
   // platform.
   static bool IsBluetoothAdapterAvailable();
@@ -35,6 +40,9 @@ class BluetoothAdapterFactory {
   // but may or may not have been initialized.
   // It returns NULL if no adapter has been created at the time.
   static scoped_refptr<BluetoothAdapter> MaybeGetAdapter();
+
+ private:
+  AdapterInitializer adapter_initializer_;
 };
 
 }  // namespace device