Standardize usage of virtual/override/final specifiers.

media/mojo/services/renderer_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 "base/at_exit.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "media/base/audio_decoder_config.h"
@@ skipping 90 matching lines @@
 };
 
 }  // namespace
 
 namespace media {
 
 class MojoRendererTest : public testing::Test {
  public:
   MojoRendererTest() : service_provider_(NULL) {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     demuxer_stream_provider_.reset(new FakeDemuxerStream());
     service_provider_ =
         g_test_delegate->application_impl()
             ->ConnectToApplication("mojo:media_mojo_renderer_app")
             ->GetServiceProvider();
   }
 
   mojo::ServiceProvider* service_provider() { return service_provider_; }
   DemuxerStreamProvider* stream_provider() {
     return demuxer_stream_provider_.get();
@@ skipping 53 matching lines @@
     int argc = 0;
     char** argv = NULL;
     testing::InitGoogleTest(&argc, argv);
     mojo_ignore_result(RUN_ALL_TESTS());
   }
 
   g_test_delegate = NULL;
   delegate.reset();
   return MOJO_RESULT_OK;
 }