Implement BluetoothRemoteGattServiceWin and related unit tests

device/bluetooth/test/bluetooth_test.h

Index: device/bluetooth/test/bluetooth_test.h
diff --git a/device/bluetooth/test/bluetooth_test.h b/device/bluetooth/test/bluetooth_test.h
index 5e34d909d8666a6f1408a95cc4cb8ca38fc2de69..5570ca11f1f7ffd0a6b23ea624d27fcfe28b3f39 100644
--- a/device/bluetooth/test/bluetooth_test.h
+++ b/device/bluetooth/test/bluetooth_test.h
@@ -113,6 +113,9 @@ class BluetoothTestBase : public testing::Test {
       BluetoothDevice* device,
       const std::vector<std::string>& uuids) {}
 
+  // Simulates remove of a |service|.
+  virtual void SimulateGattServiceRemoved(BluetoothGattService* service) {}
+
   // Simulates failure to discover services.
   virtual void SimulateGattServicesDiscoveryError(BluetoothDevice* device) {}
 
@@ -121,6 +124,11 @@ class BluetoothTestBase : public testing::Test {
                                           const std::string& uuid,
                                           int properties) {}
 
+  // Simulates remove of a |characteristic| from |service|.
+  virtual void SimulateGattCharacteristicRemoved(
+      BluetoothGattService* service,
+      BluetoothGattCharacteristic* characteristic) {}
+
   // Remembers |characteristic|'s platform specific object to be used in a
   // subsequent call to methods such as SimulateGattCharacteristicRead that
   // accept a nullptr value to select this remembered characteristic. This