bluetooth: Replace old advertised uuids

device/bluetooth/bluetooth_low_energy_discovery_manager_mac.mm

 // Copyright 2015 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_low_energy_discovery_manager_mac.h"
 
 #include <memory>
 
 #include "base/mac/mac_util.h"
 #include "base/mac/sdk_forward_declarations.h"
@@ skipping 46 matching lines @@
     services = [NSMutableArray array];
     for (auto& service_uuid : services_uuids_) {
       NSString* uuidString =
           base::SysUTF8ToNSString(service_uuid.canonical_value().c_str());
       CBUUID* uuid = [CBUUID UUIDWithString:uuidString];
       [services addObject:uuid];
     }
   };
 
   VLOG(1) << "TryStartDiscovery scanForPeripheralsWithServices";
-  [central_manager_ scanForPeripheralsWithServices:services options:nil];
+  // Start a scan with the Allow Duplicates option so that we get notified
+  // of each new advertisement packet.

[scheib, 2016/08/06 00:21:41]

Good, but follow through with why we need to see each packet. (cite the comment
you'll at too Observer::DeviceChanged)

[ortuno, 2016/08/08 22:56:39]

Done.

+  [central_manager_
+      scanForPeripheralsWithServices:services
+                             options:@{
+                               CBCentralManagerScanOptionAllowDuplicatesKey :
+                                   @YES
+                             }];
   pending_ = false;
 }
 
 void BluetoothLowEnergyDiscoveryManagerMac::StopDiscovery() {
   VLOG(1) << "StopDiscovery";
   if (discovering_ && !pending_) {
     [central_manager_ stopScan];
   }
   discovering_ = false;
 }
@@ skipping 17 matching lines @@
 }
 
 BluetoothLowEnergyDiscoveryManagerMac::BluetoothLowEnergyDiscoveryManagerMac(
     Observer* observer)
     : observer_(observer) {
   DCHECK(BluetoothAdapterMac::IsLowEnergyAvailable());
   discovering_ = false;
 }
 
 }  // namespace device