Bluetooth: Add service data unit tests for chromeos

device/bluetooth/dbus/fake_bluetooth_device_client.cc

Index: device/bluetooth/dbus/fake_bluetooth_device_client.cc
diff --git a/device/bluetooth/dbus/fake_bluetooth_device_client.cc b/device/bluetooth/dbus/fake_bluetooth_device_client.cc
index 58f694f03cf6e3161e261e099f74dafe446a5215..3ce62c3519c1d4cab6d4587e31703d0dbed40105 100644
--- a/device/bluetooth/dbus/fake_bluetooth_device_client.cc
+++ b/device/bluetooth/dbus/fake_bluetooth_device_client.cc
@@ -1551,6 +1551,29 @@ void FakeBluetoothDeviceClient::UpdateDeviceRSSI(
   properties->rssi.ReplaceValue(rssi);
 }
 
+void FakeBluetoothDeviceClient::UpdateServiceData(
+    const dbus::ObjectPath& object_path,
+    const std::unordered_map<std::string, std::vector<uint8_t>>& service_data) {
+  PropertiesMap::const_iterator iter = properties_map_.find(object_path);
+  if (iter == properties_map_.end()) {
+    VLOG(2) << "Fake device does not exist: " << object_path.value();
+    return;
+  }
+  Properties* properties = iter->second.get();
+  DCHECK(properties);
+  properties->service_data.set_valid(true);
+
+  // BlueZ caches all the previously received advertisements. To mimic BlueZ
+  // caching behavior, merge the new data here with the existing data.
+  // TODO(crbug.com/707039): once the BlueZ caching behavior is changed, this
+  // needs to be updated as well.
+  std::unordered_map<std::string, std::vector<uint8_t>> merged_data =
+      service_data;
+  merged_data.insert(properties->service_data.value().begin(),
+                     properties->service_data.value().end());
+  properties->service_data.ReplaceValue(merged_data);
+}
+
 void FakeBluetoothDeviceClient::UpdateConnectionInfo(
     uint16_t connection_rssi,
     uint16_t transmit_power,
@@ -1775,7 +1798,8 @@ void FakeBluetoothDeviceClient::CreateTestDevice(
     const std::string alias,
     const std::string device_address,
     const std::vector<std::string>& service_uuids,
-    device::BluetoothTransport type) {
+    device::BluetoothTransport type,
+    const std::unordered_map<std::string, std::vector<uint8_t>>& service_data) {
   // Create a random device path.
   dbus::ObjectPath device_path;
   std::string id;
@@ -1818,6 +1842,11 @@ void FakeBluetoothDeviceClient::CreateTestDevice(
   }
   properties->type.set_valid(true);
 
+  if (!service_data.empty()) {
+    properties->service_data.ReplaceValue(service_data);
+    properties->service_data.set_valid(true);
+  }
+
   properties_map_.insert(std::make_pair(device_path, std::move(properties)));
   device_list_.push_back(device_path);
   for (auto& observer : observers_)