Implementing GATT connection/disconnect on OS X.

device/bluetooth/test/mock_bluetooth_cbperipheral_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 "mock_bluetooth_cbperipheral_mac.h"
+
+@implementation MockCBPeripheral
+
+@synthesize name = _name;
+@synthesize identifier = _identifier;
+@synthesize state = _state;
+
+- (instancetype)initWithIdentifier:(NSUUID*)identifier {
+  self = [super init];
+  if (self) {
+    _identifier = [identifier retain];
+    _name = [@"FakeBluetoothDevice" retain];
+    _state = CBPeripheralStateDisconnected;
+  }
+  return self;
+}
+
+- (void)dealloc {
+  [_name release];
+  [_identifier release];
+  [super dealloc];
+}
+
+- (void)setStateForTesting:(CBPeripheralState)state {
+  _state = state;
+}
+
+@end