Added class BluetoothDeviceMac, returns mac device timing data

device/bluetooth/bluetooth_adapter_mac.mm

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "device/bluetooth/bluetooth_adapter_mac.h"
 
 #import <IOBluetooth/objc/IOBluetoothDevice.h>
 #import <IOBluetooth/objc/IOBluetoothHostController.h>
 
 #include <string>
@@ skipping 373 matching lines @@
 }
 
 // TODO(krstnmnlsn): This method to be implemented as soon as UpdateDevices can
 // handle instances of LowEnergyBluetoothDevice in |devices_|. crbug.com/498009
 void BluetoothAdapterMac::LowEnergyDeviceUpdated(
     CBPeripheral* peripheral,
     NSDictionary* advertisementData,
     int rssi) {
 }
 
-// TODO(krstnmnlsn): This method assumes all BluetoothDevices in devices_ are
-// instances of BluetoothDeviceMac.  Add support for low energy devices.
-// crbug.com/498009
 void BluetoothAdapterMac::UpdateDevices() {
   // Notify observers if any previously seen devices are no longer available,
   // i.e. if they are no longer paired, connected, nor recently discovered via
   // an inquiry.
   std::set<std::string> removed_devices;
   for (DevicesMap::iterator it = devices_.begin(); it != devices_.end(); ++it) {
     BluetoothDevice* device = it->second;
     if (device->IsPaired() || device->IsConnected())
       continue;
 
-    NSDate* last_inquiry_update =
-        static_cast<BluetoothClassicDeviceMac*>(device)->GetLastInquiryUpdate();
-    if (last_inquiry_update &&
-        -[last_inquiry_update timeIntervalSinceNow] < kDiscoveryTimeoutSec)
+    NSDate* last_update_time =
+        static_cast<BluetoothDeviceMac*>(device)->GetLastUpdateTime();
+    if (last_update_time &&
+        -[last_update_time timeIntervalSinceNow] < kDiscoveryTimeoutSec)
       continue;
 
     FOR_EACH_OBSERVER(
         BluetoothAdapter::Observer, observers_, DeviceRemoved(this, device));
     delete device;
     removed_devices.insert(it->first);
     // The device will be erased from the map in the loop immediately below.
   }
   for (const std::string& device_address : removed_devices) {
     size_t num_removed = devices_.erase(device_address);
     DCHECK_EQ(num_removed, 1U);
   }
 
   // Add any new paired devices.
   for (IOBluetoothDevice* device in [IOBluetoothDevice pairedDevices]) {
     ClassicDeviceAdded(device);
   }
 }
 
 }  // namespace device