bluetooth: Create base class BluetoothDevice::CreateGattConnection impl.

device/bluetooth/bluetooth_gatt_connection.cc

 // Copyright 2014 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/bluetooth_gatt_connection.h"
 
+#include "device/bluetooth/bluetooth_adapter.h"
+
 namespace device {
 
-BluetoothGattConnection::BluetoothGattConnection() {
+BluetoothGattConnection::BluetoothGattConnection(
+    scoped_refptr<device::BluetoothAdapter> adapter,
+    const std::string& device_address)
+    : adapter_(adapter), device_address_(device_address) {
+  DCHECK(adapter_.get());
+  DCHECK(!device_address_.empty());
+
+  device_ = adapter_->GetDevice(device_address_);
+  DCHECK(device_);
+  owns_reference_for_connection_ = true;
+  device_->AddGattConnection(this);
 }
 
 BluetoothGattConnection::~BluetoothGattConnection() {
+  Disconnect();
+}
+
+const std::string& BluetoothGattConnection::GetDeviceAddress() const {
+  return device_address_;
+}
+
+bool BluetoothGattConnection::IsConnected() {
+  if (!owns_reference_for_connection_)
+    return false;
+  DCHECK(adapter_->GetDevice(device_address_));
+  DCHECK(device_->IsGattConnected());
+  return true;
+}
+
+void BluetoothGattConnection::Disconnect() {
+  if (!owns_reference_for_connection_)
+    return;
+
+  owns_reference_for_connection_ = false;
+  device_->RemoveGattConnection(this);
+}
+
+void BluetoothGattConnection::InvalidateConnectionReference() {
+  owns_reference_for_connection_ = false;
 }
 
 }  // namespace device