Adjust URLFetcher::Create API so that object is returned as scoped_ptr.

chrome/browser/extensions/blob_reader.cc

 // 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.
 
 #include "chrome/browser/extensions/blob_reader.h"
 
 #include "base/format_macros.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 10 matching lines @@
     : callback_(callback) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   GURL blob_url;
   if (StartsWithASCII(blob_uuid, "blob:blobinternal", true)) {
     // TODO(michaeln): remove support for deprecated blob urls
     blob_url = GURL(blob_uuid);
   } else {
     blob_url = GURL(std::string("blob:uuid/") + blob_uuid);
   }
   DCHECK(blob_url.is_valid());
-  fetcher_.reset(net::URLFetcher::Create(
-      blob_url, net::URLFetcher::GET,
-      this));
+  fetcher_ = net::URLFetcher::Create(blob_url, net::URLFetcher::GET, this);
   fetcher_->SetRequestContext(profile->GetRequestContext());
 }
 
 BlobReader::~BlobReader() { DCHECK_CURRENTLY_ON(content::BrowserThread::UI); }
 
 void BlobReader::SetByteRange(int64 offset, int64 length) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   CHECK_GE(offset, 0);
   CHECK_GT(length, 0);
   CHECK_LE(offset, kint64max - length);
@@ skipping 15 matching lines @@
 void BlobReader::OnURLFetchComplete(const net::URLFetcher* source) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   scoped_ptr<std::string> response(new std::string);
   int64 first = 0, last = 0, length = 0;
   source->GetResponseAsString(response.get());
   source->GetResponseHeaders()->GetContentRange(&first, &last, &length);
   callback_.Run(response.Pass(), length);
 
   delete this;
 }