Bluetooth: Add service data unit tests for chromeos

device/bluetooth/test/bluetooth_test_mac.mm

Index: device/bluetooth/test/bluetooth_test_mac.mm
diff --git a/device/bluetooth/test/bluetooth_test_mac.mm b/device/bluetooth/test/bluetooth_test_mac.mm
index 777e91339cf66d8d512b200378f7e9f0ebc7f116..04c61e33226d28cdcb17d547b7de815907a23464 100644
--- a/device/bluetooth/test/bluetooth_test_mac.mm
+++ b/device/bluetooth/test/bluetooth_test_mac.mm
@@ -176,9 +176,9 @@ BluetoothDevice* BluetoothTestMac::SimulateLowEnergyDevice(int device_ordinal) {
       ];
       service_data = @{
         [CBUUID UUIDWithString:@(kTestUUIDHeartRate.c_str())] :
-            [NSData dataWithBytes:(unsigned char[]){2} length:1],

[ortuno, 2017/04/03 23:55:51]

Ah seems like we need to fix the test data for the following tests:

BluetoothTest.AdvertisementData_ConnectionDuringDiscovery
BluetoothTest.AdvertisementData_Discovery
BluetoothTest.AdvertisementData_DiscoveryDuringConnection

+            [NSData dataWithBytes:(unsigned char[]){} length:0],
         [CBUUID UUIDWithString:@(kTestUUIDImmediateAlert.c_str())] :
-            [NSData dataWithBytes:(unsigned char[]){0} length:1]
+            [NSData dataWithBytes:(unsigned char[]){0, 2} length:2]
       };
       tx_power = @(static_cast<int8_t>(TestTxPower::LOWER));
       break;