Implementing GATT connection/disconnect on OS X.

device/bluetooth/bluetooth_adapter_mac.mm

Index: device/bluetooth/bluetooth_adapter_mac.mm
diff --git a/device/bluetooth/bluetooth_adapter_mac.mm b/device/bluetooth/bluetooth_adapter_mac.mm
index 72554ed21b458129818ec0f12243a6be8a58cd7a..ece07d663e19524dc59fbabb5cca40d8828a80a1 100644
--- a/device/bluetooth/bluetooth_adapter_mac.mm
+++ b/device/bluetooth/bluetooth_adapter_mac.mm
@@ -232,6 +232,10 @@ void BluetoothAdapterMac::SetCentralManagerForTesting(
       low_energy_central_manager_.get());
 }
 
+CBCentralManager* BluetoothAdapterMac::GetCentralManagerForTesting() {
+  return low_energy_central_manager_;
+}
+
 void BluetoothAdapterMac::RemovePairingDelegateInternal(
     BluetoothDevice::PairingDelegate* pairing_delegate) {
 }
@@ -537,4 +541,31 @@ void BluetoothAdapterMac::AddPairedDevices() {
   }
 }
 
+void BluetoothAdapterMac::CreateGattConnection(
+    BluetoothLowEnergyDeviceMac* device_mac) {
+  [low_energy_central_manager_ connectPeripheral:device_mac->peripheral_
+                                         options:nil];
+}
+
+void BluetoothAdapterMac::DidConnectPeripheral(CBPeripheral* peripheral) {
+  std::string device_address =
+      BluetoothLowEnergyDeviceMac::GetPeripheralHashAddress(peripheral);
+  // Try to find device from |devices_| with key |device_address|,
+  // if has no entry in the map, disconnect the peripheral.
+  DevicesMap::const_iterator iter = devices_.find(device_address);
+  if (iter == devices_.end()) {
+    [low_energy_central_manager_ cancelPeripheralConnection:peripheral];
+    return;
+  }
+  BluetoothLowEnergyDeviceMac* device_mac =
+      static_cast<BluetoothLowEnergyDeviceMac*>(iter->second);
+  device_mac->GattConnected();
+}
+
+void BluetoothAdapterMac::DisconnectGatt(
+    BluetoothLowEnergyDeviceMac* device_mac) {
+  [low_energy_central_manager_
+      cancelPeripheralConnection:device_mac->peripheral_];
+}
+
 }  // namespace device