bluetoothLowEnergy: Send onServiceAdded after all characteristics are discovered

chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_apitest.cc

Index: chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_apitest.cc
diff --git a/chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_apitest.cc b/chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_apitest.cc
index 78fd1ff2710f8818372fd57156a1b31041e076b8..07820c2d2b52e19647d4f2ffe063551844752363 100644
--- a/chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_apitest.cc
+++ b/chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_apitest.cc
@@ -330,9 +330,18 @@ IN_PROC_BROWSER_TEST_F(BluetoothLowEnergyApiTest, ServiceEvents) {
   // Cause events to be sent to the extension.
   event_router()->DeviceAdded(mock_adapter_, device0_.get());
 
+  // These will create the identifier mappings.
   event_router()->GattServiceAdded(device0_.get(), service0_.get());
   event_router()->GattServiceAdded(device0_.get(), service1_.get());
+
+  // These will send the onServiceAdded event to apps.
+  event_router()->GattDiscoveryCompleteForService(service0_.get());
+  event_router()->GattDiscoveryCompleteForService(service1_.get());
+
+  // This will send the onServiceChanged event to apps.
   event_router()->GattServiceChanged(service1_.get());
+
+  // This will send the  onServiceRemoved event to apps.
   event_router()->GattServiceRemoved(device0_.get(), service0_.get());
 
   EXPECT_TRUE(listener.WaitUntilSatisfied());
@@ -361,6 +370,7 @@ IN_PROC_BROWSER_TEST_F(BluetoothLowEnergyApiTest, GetRemovedService) {
 
   event_router()->DeviceAdded(mock_adapter_, device0_.get());
   event_router()->GattServiceAdded(device0_.get(), service0_.get());
+  event_router()->GattDiscoveryCompleteForService(service0_.get());
 
   ExtensionTestMessageListener get_service_success_listener("getServiceSuccess",
                                                             true);