bluetooth: mac: write characteristic implementation

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.
 
 #include "device/bluetooth/test/mock_bluetooth_cbperipheral_mac.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "device/bluetooth/test/bluetooth_test_mac.h"
 #include "device/bluetooth/test/mock_bluetooth_cbservice_mac.h"
@@ skipping 78 matching lines @@
 
 - (void)discoverCharacteristics:(NSArray*)characteristics
                      forService:(CBService*)service {
 }
 
 - (void)readValueForCharacteristic:(CBCharacteristic*)characteristic {
   DCHECK(_bluetoothTestMac);
   _bluetoothTestMac->OnFakeBluetoothCharacteristicReadValue();
 }
 
+- (void)writeValue:(NSData*)data
+    forCharacteristic:(CBCharacteristic*)characteristic
+                 type:(CBCharacteristicWriteType)type {
+  DCHECK(_bluetoothTestMac);
+  const uint8_t* buffer = static_cast<const uint8_t*>(data.bytes);
+  std::vector<uint8_t> value(buffer, buffer + data.length);
+  _bluetoothTestMac->OnFakeBluetoothCharacteristicWriteValue(value);
+}
+
 - (void)removeAllServices {
   [_services.get() removeAllObjects];
 }
 
 - (void)addServices:(NSArray*)services {
   if (!_services.get()) {
     _services.reset([[NSMutableArray alloc] init]);
   }
   for (CBUUID* uuid in services) {
     base::scoped_nsobject<MockCBService> service([[MockCBService alloc]
@@ skipping 46 matching lines @@
 
 - (NSArray*)services {
   return _services.get();
 }
 
 - (CBPeripheral*)peripheral {
   return ObjCCast<CBPeripheral>(self);
 }
 
 @end