Standardize usage of virtual/override/final in content/renderer/

content/renderer/gpu/gpu_benchmarking_extension.cc

 // Copyright (c) 2012 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/renderer/gpu/gpu_benchmarking_extension.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/files/file_path.h"
@@ skipping 320 matching lines @@
             "chrome.gpuBenchmarking.sendMessageToMicroBenchmark ="
             "    function(id, arguments) {"
             "  native function SendMessageToMicroBenchmark();"
             "  return SendMessageToMicroBenchmark(id, arguments);"
             "};"
             "chrome.gpuBenchmarking.hasGpuProcess = function() {"
             "  native function HasGpuProcess();"
             "  return HasGpuProcess();"
             "};") {}
 
-  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunctionTemplate(
+  v8::Handle<v8::FunctionTemplate> GetNativeFunctionTemplate(
       v8::Isolate* isolate,
       v8::Handle<v8::String> name) override {
     if (name->Equals(
             v8::String::NewFromUtf8(isolate, "SetNeedsDisplayOnAllLayers")))
       return v8::FunctionTemplate::New(isolate, SetNeedsDisplayOnAllLayers);
     if (name->Equals(
             v8::String::NewFromUtf8(isolate, "SetRasterizeOnlyVisibleContent")))
       return v8::FunctionTemplate::New(isolate, SetRasterizeOnlyVisibleContent);
     if (name->Equals(v8::String::NewFromUtf8(isolate, "PrintToSkPicture")))
       return v8::FunctionTemplate::New(isolate, PrintToSkPicture);
@@ skipping 562 matching lines @@
     GpuChannelHost* gpu_channel = RenderThreadImpl::current()->GetGpuChannel();
     args.GetReturnValue().Set(!!gpu_channel);
   }
 };
 
 v8::Extension* GpuBenchmarkingExtension::Get() {
   return new GpuBenchmarkingWrapper();
 }
 
 }  // namespace content