Bluetooth: mac: add connected BLE devices at startup

device/bluetooth/test/mock_bluetooth_central_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.
 
 #import "device/bluetooth/test/mock_bluetooth_central_manager_mac.h"
 
 #import "device/bluetooth/test/bluetooth_test_mac.h"
 #import "device/bluetooth/test/mock_bluetooth_cbperipheral_mac.h"
 
 @implementation MockCentralManager
 
 @synthesize scanForPeripheralsCallCount = _scanForPeripheralsCallCount;
 @synthesize stopScanCallCount = _stopScanCallCount;
 @synthesize delegate = _delegate;
 @synthesize state = _state;
 @synthesize bluetoothTestMac = _bluetoothTestMac;
+@synthesize connected_peripherals = _connected_peripherals;
 
 - (BOOL)isKindOfClass:(Class)aClass {
   if (aClass == [CBCentralManager class] ||
       [aClass isSubclassOfClass:[CBCentralManager class]]) {
     return YES;
   }
   return [super isKindOfClass:aClass];
 }
 
 - (BOOL)isMemberOfClass:(Class)aClass {
   if (aClass == [CBCentralManager class] ||
       [aClass isSubclassOfClass:[CBCentralManager class]]) {
     return YES;
   }
   return [super isKindOfClass:aClass];
 }
 
+- (NSArray*)retrieveConnectedPeripheralsWithServices:(NSArray*)serviceUUIDs {
+  return _connected_peripherals;
+}
+
 - (void)scanForPeripheralsWithServices:(NSArray*)serviceUUIDs
                                options:(NSDictionary*)options {
   _scanForPeripheralsCallCount++;
 }
 
 - (void)stopScan {
   _stopScanCallCount++;
 }
 
 - (void)connectPeripheral:(CBPeripheral*)peripheral
                   options:(NSDictionary*)options {
   if (_bluetoothTestMac) {
     _bluetoothTestMac->OnFakeBluetoothDeviceConnectGattCalled();
   }
 }
 
 - (void)cancelPeripheralConnection:(CBPeripheral*)peripheral {
   if (_bluetoothTestMac) {
     _bluetoothTestMac->OnFakeBluetoothGattDisconnect();
   }
 }
 
 @end