chrome.bluetooth API improvements.

device/bluetooth/bluetooth_adapter_win.h

Index: device/bluetooth/bluetooth_adapter_win.h
diff --git a/device/bluetooth/bluetooth_adapter_win.h b/device/bluetooth/bluetooth_adapter_win.h
index 6e7382f72121bd1b7882fdfd6ca040d6a469718f..2c12fda7eac95bf7cda10e824bfa6cc9359baf2c 100644
--- a/device/bluetooth/bluetooth_adapter_win.h
+++ b/device/bluetooth/bluetooth_adapter_win.h
@@ -18,9 +18,8 @@
 #include "device/bluetooth/bluetooth_task_manager_win.h"
 
 namespace base {
-
 class SequencedTaskRunner;
-
+class Thread;
 }  // namespace base
 
 namespace device {
@@ -28,6 +27,7 @@ namespace device {
 class BluetoothAdapterFactory;
 class BluetoothAdapterWinTest;
 class BluetoothDevice;
+class BluetoothSocketThreadWin;
 
 class BluetoothAdapterWin : public BluetoothAdapter,
                             public BluetoothTaskManagerWin::Observer {
@@ -121,6 +121,7 @@ class BluetoothAdapterWin : public BluetoothAdapter,
   size_t num_discovery_listeners_;
 
   scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
+  scoped_refptr<BluetoothSocketThreadWin> socket_thread_;
   scoped_refptr<BluetoothTaskManagerWin> task_manager_;
 
   base::ThreadChecker thread_checker_;