Standardize usage of virtual/override/final specifiers.

content/renderer/media/video_source_handler_unittest.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 <string>
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/child/child_process.h"
 #include "content/common/media/video_capture.h"
@@ skipping 31 matching lines @@
 class VideoSourceHandlerTest : public ::testing::Test {
  public:
   VideoSourceHandlerTest()
        : child_process_(new ChildProcess()),
          registry_(new MockMediaStreamRegistry()) {
     handler_.reset(new VideoSourceHandler(registry_.get()));
     registry_->Init(kTestStreamUrl);
     registry_->AddVideoTrack(kTestVideoTrackId);
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     registry_.reset();
     handler_.reset();
     blink::WebHeap::collectAllGarbageForTesting();
   }
 
  protected:
   base::MessageLoop message_loop_;
   scoped_ptr<ChildProcess> child_process_;
   scoped_ptr<VideoSourceHandler> handler_;
   scoped_ptr<MockMediaStreamRegistry> registry_;
@@ skipping 29 matching lines @@
   EXPECT_FALSE(handler_->Close(NULL));
   EXPECT_TRUE(handler_->Close(&reader));
 }
 
 TEST_F(VideoSourceHandlerTest, OpenWithoutClose) {
   FakeFrameReader reader;
   EXPECT_TRUE(handler_->Open(kTestStreamUrl, &reader));
 }
 
 }  // namespace content