Implementing GATT connection/disconnect on OS X.

device/bluetooth/bluetooth_low_energy_central_manager_delegate.mm

Index: device/bluetooth/bluetooth_low_energy_central_manager_delegate.mm
diff --git a/device/bluetooth/bluetooth_low_energy_central_manager_delegate.mm b/device/bluetooth/bluetooth_low_energy_central_manager_delegate.mm
index 598e4b97bcf70a177ce756c6a909519117f2a7e4..95e452c9c6399bd8a37e62c67180bf7f5ba13816 100644
--- a/device/bluetooth/bluetooth_low_energy_central_manager_delegate.mm
+++ b/device/bluetooth/bluetooth_low_energy_central_manager_delegate.mm
@@ -33,6 +33,20 @@ class BluetoothLowEnergyCentralManagerBridge {
     adapter_->LowEnergyCentralManagerUpdatedState();
   }
 
+  virtual void DidConnectPeripheral(CBPeripheral* peripheral) {
+    adapter_->DidConnectPeripheral(peripheral);
+  }
+
+  virtual void DidFailToConnectPeripheral(CBPeripheral* peripheral,
+                                          NSError* error) {
+    adapter_->DidFailToConnectPeripheral(peripheral, error);
+  }
+
+  virtual void DidDisconnectPeripheral(CBPeripheral* peripheral,
+                                       NSError* error) {
+    adapter_->DidDisconnectPeripheral(peripheral, error);
+  }
+
  private:
   BluetoothLowEnergyDiscoveryManagerMac* discovery_manager_;
   BluetoothAdapterMac* adapter_;
@@ -65,4 +79,21 @@ class BluetoothLowEnergyCentralManagerBridge {
   bridge_->UpdatedState();
 }
 
+- (void)centralManager:(CBCentralManager*)central
+    didConnectPeripheral:(CBPeripheral*)peripheral {
+  bridge_->DidConnectPeripheral(peripheral);
+}
+
+- (void)centralManager:(CBCentralManager*)central
+    didFailToConnectPeripheral:(CBPeripheral*)peripheral
+                         error:(nullable NSError*)error {
+  bridge_->DidFailToConnectPeripheral(peripheral, error);
+}
+
+- (void)centralManager:(CBCentralManager*)central
+    didDisconnectPeripheral:(CBPeripheral*)peripheral
+                      error:(nullable NSError*)error {
+  bridge_->DidDisconnectPeripheral(peripheral, error);
+}
+
 @end