Convert the SkiaBenchmarkingExtension to a gin::Wrappable class

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/file_util.h"
@@ skipping 53 matching lines @@
 
 namespace {
 
 class SkPictureSerializer {
  public:
   explicit SkPictureSerializer(const base::FilePath& dirpath)
       : dirpath_(dirpath),
         layer_id_(0) {
     // Let skia register known effect subclasses. This basically enables
     // reflection on those subclasses required for picture serialization.
-    content::SkiaBenchmarkingExtension::InitSkGraphics();
+    content::SkiaBenchmarking::Initialize();
   }
 
   // Recursively serializes the layer tree.
   // Each layer in the tree is serialized into a separate skp file
   // in the given directory.
   void Serialize(const cc::Layer* layer) {
     const cc::LayerList& children = layer->children();
     for (size_t i = 0; i < children.size(); ++i) {
       Serialize(children[i].get());
     }
@@ skipping 760 matching lines @@
     GpuChannelHost* gpu_channel = RenderThreadImpl::current()->GetGpuChannel();
     args.GetReturnValue().Set(!!gpu_channel);
   }
 };
 
 v8::Extension* GpuBenchmarkingExtension::Get() {
   return new GpuBenchmarkingWrapper();
 }
 
 }  // namespace content