Standardize usage of virtual/override/final in chrome/

chrome/utility/image_writer/image_writer_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 <string>
 
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/run_loop.h"
 #include "chrome/utility/image_writer/error_messages.h"
@@ skipping 49 matching lines @@
   MOCK_METHOD0(SendSucceeded, void());
   MOCK_METHOD1(OnMessageReceived, bool(const IPC::Message& message));
 };
 
 // This Mock has the additional feature that it will start verification when
 // the write completes.
 class VerifyingHandler : public MockHandler {
  public:
   VerifyingHandler() : image_writer_(NULL), verified_(false) {}
 
-  virtual void SendSucceeded() override {
+  void SendSucceeded() override {
     MockHandler::SendSucceeded();
     if (!verified_) {
       image_writer_->Verify();
       verified_ = true;
     }
   }
   ImageWriter* image_writer_;
 
  private:
   bool verified_;
@@ skipping 140 matching lines @@
   EXPECT_CALL(mock_handler, SendFailed(_)).Times(0);
 
   FillDefault(image_path_);
 
   image_writer.Write();
 
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace image_writer