Standardize usage of virtual/override/final in components/

components/proximity_auth/bluetooth_connection_unittest.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 "components/proximity_auth/bluetooth_connection.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/run_loop.h"
 #include "components/proximity_auth/remote_device.h"
@@ skipping 62 matching lines @@
   using BluetoothConnection::DeviceRemoved;
   using BluetoothConnection::Disconnect;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockBluetoothConnection);
 };
 
 class TestWireMessage : public WireMessage {
  public:
   TestWireMessage() : WireMessage("permit id", "payload") {}
-  virtual ~TestWireMessage() {}
+  ~TestWireMessage() override {}
 
-  virtual std::string Serialize() const override { return kSerializedMessage; }
+  std::string Serialize() const override { return kSerializedMessage; }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestWireMessage);
 };
 
 }  // namespace
 
 class ProximityAuthBluetoothConnectionTest : public testing::Test {
  public:
   ProximityAuthBluetoothConnectionTest()
@@ skipping 346 matching lines @@
 
   ASSERT_FALSE(error_callback.is_null());
   EXPECT_CALL(connection, OnDidSendMessage(Ref(*expected_wire_message), false));
   EXPECT_CALL(connection, SetStatusProxy(Connection::DISCONNECTED));
   EXPECT_CALL(*socket_, Disconnect(_));
   EXPECT_CALL(*adapter_, RemoveObserver(&connection));
   error_callback.Run("The most helpful of error messages");
 }
 
 }  // namespace proximity_auth