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

device/bluetooth/dbus/fake_bluetooth_gatt_descriptor_service_provider.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/dbus/fake_bluetooth_gatt_descriptor_service_provider.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/callback.h"
@@ skipping 78 matching lines @@
   fake_bluetooth_gatt_manager_client->UnregisterDescriptorServiceProvider(this);
 }
 
 void FakeBluetoothGattDescriptorServiceProvider::SendValueChanged(
     const std::vector<uint8_t>& value) {
   VLOG(1) << "Sent descriptor value changed: " << object_path_.value()
           << " UUID: " << uuid_;
 }
 
 void FakeBluetoothGattDescriptorServiceProvider::GetValue(
+    const dbus::ObjectPath& device_path,
     const device::BluetoothLocalGattService::Delegate::ValueCallback& callback,
     const device::BluetoothLocalGattService::Delegate::ErrorCallback&
         error_callback) {
   VLOG(1) << "GATT descriptor value Get request: " << object_path_.value()
           << " UUID: " << uuid_;
   // Check if this descriptor is registered.
   FakeBluetoothGattManagerClient* fake_bluetooth_gatt_manager_client =
       static_cast<FakeBluetoothGattManagerClient*>(
           bluez::BluezDBusManager::Get()->GetBluetoothGattManagerClient());
   FakeBluetoothGattCharacteristicServiceProvider* characteristic =
@@ skipping 12 matching lines @@
   }
 
   if (!CanRead(flags_)) {
     VLOG(1) << "GATT descriptor not readable.";
     error_callback.Run();
     return;
   }
 
   // Pass on to the delegate.
   DCHECK(delegate_);
-  delegate_->GetValue(callback, error_callback);
+  delegate_->GetValue(device_path, callback, error_callback);
 }
 
 void FakeBluetoothGattDescriptorServiceProvider::SetValue(
+    const dbus::ObjectPath& device_path,
     const std::vector<uint8_t>& value,
     const base::Closure& callback,
     const device::BluetoothLocalGattService::Delegate::ErrorCallback&
         error_callback) {
   VLOG(1) << "GATT descriptor value Set request: " << object_path_.value()
           << " UUID: " << uuid_;
 
   // Check if this descriptor is registered.
   FakeBluetoothGattManagerClient* fake_bluetooth_gatt_manager_client =
       static_cast<FakeBluetoothGattManagerClient*>(
@@ skipping 14 matching lines @@
   }
 
   if (!CanWrite(flags_)) {
     VLOG(1) << "GATT descriptor not writeable.";
     error_callback.Run();
     return;
   }
 
   // Pass on to the delegate.
   DCHECK(delegate_);
-  delegate_->SetValue(value, callback, error_callback);
+  delegate_->SetValue(device_path, value, callback, error_callback);
 }
 
 const dbus::ObjectPath&
 FakeBluetoothGattDescriptorServiceProvider::object_path() const {
   return object_path_;
 }
 
 }  // namespace bluez