Standardize usage of virtual/override/final specifiers.

components/crash/browser/crash_handler_host_linux.h

 // Copyright 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.
 
 #ifndef COMPONENTS_CRASH_BROWSER_CRASH_HANDLER_HOST_LINUX_H_
 #define COMPONENTS_CRASH_BROWSER_CRASH_HANDLER_HOST_LINUX_H_
 
 #include <sys/types.h>
 
 #include <string>
@@ skipping 18 matching lines @@
 //
 // Processes signal that they need to be dumped by sending a datagram over a
 // UNIX domain socket. All processes of the same type share the client end of
 // this socket which is installed in their descriptor table before exec.
 class CrashHandlerHostLinux : public base::MessageLoopForIO::Watcher,
                               public base::MessageLoop::DestructionObserver {
  public:
   CrashHandlerHostLinux(const std::string& process_type,
                         const base::FilePath& dumps_path,
                         bool upload);
-  virtual ~CrashHandlerHostLinux();
+  ~CrashHandlerHostLinux() override;
 
   // Starts the uploader thread. Must be called immediately after creating the
   // class.
   void StartUploaderThread();
 
   // Get the file descriptor which processes should be given in order to signal
   // crashes to the browser.
   int GetDeathSignalSocket() const {
     return process_socket_;
   }
 
   // MessagePumbLibevent::Watcher impl:
-  virtual void OnFileCanWriteWithoutBlocking(int fd) override;
-  virtual void OnFileCanReadWithoutBlocking(int fd) override;
+  void OnFileCanWriteWithoutBlocking(int fd) override;
+  void OnFileCanReadWithoutBlocking(int fd) override;
 
   // MessageLoop::DestructionObserver impl:
-  virtual void WillDestroyCurrentMessageLoop() override;
+  void WillDestroyCurrentMessageLoop() override;
 
   // Whether we are shutting down or not.
   bool IsShuttingDown() const;
 
  private:
   void Init();
 
   // Do work in a sequenced worker pool for OnFileCanReadWithoutBlocking().
   void WriteDumpFile(scoped_ptr<BreakpadInfo> info,
                      scoped_ptr<char[]> crash_context,
@@ skipping 17 matching lines @@
   // Unique sequence token so that writing crash dump won't be blocked
   // by other tasks.
   base::SequencedWorkerPool::SequenceToken worker_pool_token_;
 
   DISALLOW_COPY_AND_ASSIGN(CrashHandlerHostLinux);
 };
 
 }  // namespace breakpad
 
 #endif  // COMPONENTS_CRASH_BROWSER_CRASH_HANDLER_HOST_LINUX_H_