Implemented BluetoothAdapterMac::AddDevices().

device/bluetooth/bluetooth_adapter_mac.h

Index: device/bluetooth/bluetooth_adapter_mac.h
diff --git a/device/bluetooth/bluetooth_adapter_mac.h b/device/bluetooth/bluetooth_adapter_mac.h
index 30857c728bf26b5d1dd177faca79fc555d8c4aba..bd189ece26bf6fff7588bddd0dc6557a47fef34e 100644
--- a/device/bluetooth/bluetooth_adapter_mac.h
+++ b/device/bluetooth/bluetooth_adapter_mac.h
@@ -12,6 +12,12 @@
 #include "base/observer_list.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 
+#ifdef __OBJC__
+@class NSArray;
+#else
+class NSArray;
+#endif
+
 namespace base {
 
 class SequencedTaskRunner;
@@ -59,6 +65,16 @@ class BluetoothAdapterMac : public BluetoothAdapter {
       scoped_refptr<base::SequencedTaskRunner> ui_task_runner);
   void PollAdapter();
 
+  // Updates |devices_| to be consistent with |devices| and notifies observers
+  // of the changes.
+  // |devices| is an array of pointers to |IOBluetoothDevice| objects.
+  void UpdateDevices(NSArray* devices);

[Mark Mentovai, 2013/03/20 19:01:16]

I like keeping the naming consistent. The new method uses the name
paired_devices. Can you use the same name for this method too, here and in the
implementation?

[youngki, 2013/03/20 20:30:50]

Actually I am going to use this method to add discovered devices into |devices|
in the later CLs, so I think I should keep the name as devices.

Speaking of that, I think AddDevices is probably a better name than
UpdateDevices, so I just changed the method name; also I revised its comments to
say that devices could be either discovered or paired devices.

+
+  // Remove any unpaired devices (i.e. devices that are not in |paired_devices|)
+  // from |devices_|.
+  // |devices| is an array of pointers to paired |IOBluetoothDevice| objects.
+  void RemoveUnpairedDevices(NSArray* paired_devices);
+
   bool powered_;
 
   scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;