Create the IOSImageDataFetcherWrapper

ios/web/public/image_fetcher/webp_decoder.mm

 // 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.
 
 #import "ios/web/public/image_fetcher/webp_decoder.h"
 
 #import <Foundation/Foundation.h>
 #include <stdint.h>
 #import <UIKit/UIKit.h>
 
@@ skipping 88 matching lines @@
     : delegate_(delegate), state_(READING_FEATURES), has_alpha_(0) {
   DCHECK(delegate_.get());
   const bool rv = WebPInitDecoderConfig(&config_);
   DCHECK(rv);
 }
 
 WebpDecoder::~WebpDecoder() {
   WebPFreeDecBuffer(&config_.output);
 }
 
-void WebpDecoder::OnDataReceived(const base::scoped_nsobject<NSData>& data) {
+void WebpDecoder::OnDataReceived(NSData* data) {
   DCHECK(data);
   switch (state_) {
     case READING_FEATURES:
       DoReadFeatures(data);
       break;
     case READING_DATA:
       DoReadData(data);
       break;
     case DONE:
       DLOG(WARNING) << "Received WebP data but decoding is finished. Ignoring.";
@@ skipping 126 matching lines @@
   }
   UMA_HISTOGRAM_ENUMERATION("WebP.DecodedImageFormat", format,
                             DECODED_FORMAT_COUNT);
   delegate_->SetImageFeatures([result_data length], format);
   delegate_->OnDataDecoded(result_data);
   output_buffer_.reset();
   return true;
 }
 
 }  // namespace webp_transcode