Standardize usage of virtual/override/final in content/

content/child/blink_platform_impl.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 "content/child/blink_platform_impl.h"
 
 #include <math.h>
 
 #include <vector>
 
@@ skipping 125 matching lines @@
 
   base::Lock lock_;
 };
 
 class ConvertableToTraceFormatWrapper
     : public base::debug::ConvertableToTraceFormat {
  public:
   explicit ConvertableToTraceFormatWrapper(
       const blink::WebConvertableToTraceFormat& convertable)
       : convertable_(convertable) {}
-  virtual void AppendAsTraceFormat(std::string* out) const override {
+  void AppendAsTraceFormat(std::string* out) const override {
     *out += convertable_.asTraceFormat().utf8();
   }
 
  private:
-  virtual ~ConvertableToTraceFormatWrapper() {}
+  ~ConvertableToTraceFormatWrapper() override {}
 
   blink::WebConvertableToTraceFormat convertable_;
 };
 
 bool isHostnameReservedIPAddress(const std::string& host) {
   net::IPAddressNumber address;
   if (!net::ParseURLHostnameToNumber(host, &address))
     return false;
   return net::IsIPAddressReserved(address);
 }
@@ skipping 1042 matching lines @@
 }
 
 // static
 void BlinkPlatformImpl::DestroyCurrentThread(void* thread) {
   WebThreadImplForMessageLoop* impl =
       static_cast<WebThreadImplForMessageLoop*>(thread);
   delete impl;
 }
 
 }  // namespace content