Add DBus plumbing and tests for sending devices with ATT read/writes.

device/bluetooth/test/test_bluetooth_local_gatt_service_delegate.cc

 // Copyright 2016 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/test_bluetooth_local_gatt_service_delegate.h>
 #include "base/callback.h"
 #include "device/bluetooth/test/bluetooth_gatt_server_test.h"
 
 namespace device {
 
@@ skipping 13 matching lines @@
     const BluetoothLocalGattCharacteristic* characteristic,
     int offset,
     const ValueCallback& callback,
     const ErrorCallback& error_callback) {
   EXPECT_EQ(expected_characteristic_->GetIdentifier(),
             characteristic->GetIdentifier());
   if (should_fail_) {
     error_callback.Run();
     return;
   }
+  last_seen_device_ = device->GetIdentifier();
   callback.Run(BluetoothGattServerTest::GetValue(value_to_write_));
 }
 
 void TestBluetoothLocalGattServiceDelegate::OnCharacteristicWriteRequest(
     const BluetoothDevice* device,
     const BluetoothLocalGattCharacteristic* characteristic,
     const std::vector<uint8_t>& value,
     int offset,
     const base::Closure& callback,
     const ErrorCallback& error_callback) {
   EXPECT_EQ(expected_characteristic_->GetIdentifier(),
             characteristic->GetIdentifier());
   if (should_fail_) {
     error_callback.Run();
     return;
   }
+  last_seen_device_ = device->GetIdentifier();
   last_written_value_ = BluetoothGattServerTest::GetInteger(value);
   callback.Run();
 }
 
 void TestBluetoothLocalGattServiceDelegate::OnDescriptorReadRequest(
     const BluetoothDevice* device,
     const BluetoothLocalGattDescriptor* descriptor,
     int offset,
     const ValueCallback& callback,
     const ErrorCallback& error_callback) {
   EXPECT_EQ(expected_descriptor_->GetIdentifier(), descriptor->GetIdentifier());
   if (should_fail_) {
     error_callback.Run();
     return;
   }
+  last_seen_device_ = device->GetIdentifier();
   callback.Run(BluetoothGattServerTest::GetValue(value_to_write_));
 }
 
 void TestBluetoothLocalGattServiceDelegate::OnDescriptorWriteRequest(
     const BluetoothDevice* device,
     const BluetoothLocalGattDescriptor* descriptor,
     const std::vector<uint8_t>& value,
     int offset,
     const base::Closure& callback,
     const ErrorCallback& error_callback) {
   EXPECT_EQ(expected_descriptor_->GetIdentifier(), descriptor->GetIdentifier());
   if (should_fail_) {
     error_callback.Run();
     return;
   }
+  last_seen_device_ = device->GetIdentifier();
   last_written_value_ = BluetoothGattServerTest::GetInteger(value);
   callback.Run();
 }
 
 void TestBluetoothLocalGattServiceDelegate::OnNotificationsStart(
     const BluetoothDevice* device,
     const BluetoothLocalGattCharacteristic* characteristic) {
   EXPECT_EQ(expected_characteristic_->GetIdentifier(),
             characteristic->GetIdentifier());
   notifications_started_for_characteristic_[characteristic->GetIdentifier()] =
@@ skipping 12 matching lines @@
 bool TestBluetoothLocalGattServiceDelegate::NotificationStatusForCharacteristic(
     BluetoothLocalGattCharacteristic* characteristic) {
   auto found = notifications_started_for_characteristic_.find(
       characteristic->GetIdentifier());
   if (found == notifications_started_for_characteristic_.end())
     return false;
   return found->second;
 }
 
 }  // namespace device