Implemented BluetoothAdapterMac::AddDevices().

device/bluetooth/bluetooth_adapter_mac.mm

Index: device/bluetooth/bluetooth_adapter_mac.mm
diff --git a/device/bluetooth/bluetooth_adapter_mac.mm b/device/bluetooth/bluetooth_adapter_mac.mm
index 5d964ccbf9f31fa7d3a9fe2329d61d9b048aef20..ed37a4a4ba40e4c45ea3e92591933e3c2455caca 100644
--- a/device/bluetooth/bluetooth_adapter_mac.mm
+++ b/device/bluetooth/bluetooth_adapter_mac.mm
@@ -4,7 +4,8 @@
 
 #include "device/bluetooth/bluetooth_adapter_mac.h"
 
-#include <IOBluetooth/objc/IOBluetoothHostController.h>
+#import <IOBluetooth/objc/IOBluetoothDevice.h>
+#import <IOBluetooth/objc/IOBluetoothHostController.h>
 
 #include <string>
 
@@ -16,6 +17,7 @@
 #include "base/thread_task_runner_handle.h"
 #include "base/time.h"
 #include "base/strings/sys_string_conversions.h"
+#include "device/bluetooth/bluetooth_device_mac.h"
 
 // Replicate specific 10.7 SDK declarations for building with prior SDKs.
 #if !defined(MAC_OS_X_VERSION_10_7) || \
@@ -133,6 +135,8 @@ void BluetoothAdapterMac::PollAdapter() {
                       AdapterPoweredChanged(this, powered_));
   }
 
+  UpdateDevices([IOBluetoothDevice recentDevices:0]);
+
   ui_task_runner_->PostDelayedTask(
       FROM_HERE,
       base::Bind(&BluetoothAdapterMac::PollAdapter,
@@ -140,4 +144,28 @@ void BluetoothAdapterMac::PollAdapter() {
       base::TimeDelta::FromMilliseconds(kPollIntervalMs));
 }
 
+void BluetoothAdapterMac::UpdateDevices(NSArray* devices) {
+  for (IOBluetoothDevice* device in devices) {
+    std::string device_address =
+        base::SysNSStringToUTF8([device addressString]);
+    DevicesMap::iterator found_device_iter = devices_.find(device_address);
+
+    if (found_device_iter == devices_.end()) {
+      devices_[device_address] = new BluetoothDeviceMac(device);
+      FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
+                        DeviceAdded(this, devices_[device_address]));
+      continue;
+    }
+    BluetoothDeviceMac* device_mac =
+        static_cast<BluetoothDeviceMac*>(found_device_iter->second);
+    if (device_mac->device_fingerprint() !=
+        BluetoothDeviceMac::ComputeDeviceFingerprint(device)) {
+      devices_[device_address] = new BluetoothDeviceMac(device);
+      FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
+                        DeviceChanged(this, devices_[device_address]));
+      delete device_mac;
+    }
+  }
+}
+
 }  // namespace device