Mark ~CrasAudioClientStubImpl as virtual

chromeos/dbus/cras_audio_client.cc

 // Copyright (c) 2013 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 "chromeos/dbus/cras_audio_client.h"
 
 #include "base/bind.h"
 #include "dbus/bus.h"
 #include "dbus/message.h"
 #include "dbus/object_path.h"
@@ skipping 277 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(CrasAudioClientImpl);
 };
 
 // The CrasAudioClient implementation used on Linux desktop,
 // which does nothing.
 class CrasAudioClientStubImpl : public CrasAudioClient {
  public:
   CrasAudioClientStubImpl() {
     VLOG(1) << "CrasAudioClientStubImpl is created";
   }
-  ~CrasAudioClientStubImpl() {}
+  virtual ~CrasAudioClientStubImpl() {}
 
   // CrasAudioClient overrides:
   // TODO(jennyz): Implement the observers and callbacks in the stub for UI
   // testing.
   virtual void AddObserver(Observer* observer) OVERRIDE {}
   virtual void RemoveObserver(Observer* observer) OVERRIDE {}
   virtual bool HasObserver(Observer* observer) OVERRIDE { return false; }
   virtual void GetVolumeState(const GetVolumeStateCallback& callback) OVERRIDE {
   }
   virtual void SetOutputVolume(int32 volume) OVERRIDE {}
@@ skipping 42 matching lines @@
     DBusClientImplementationType type,
     dbus::Bus* bus) {
   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION) {
     return new CrasAudioClientImpl(bus);
   }
   DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
   return new CrasAudioClientStubImpl();
 }
 
 }  // namespace chromeos