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

extensions/browser/content_hash_fetcher.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 "extensions/browser/content_hash_fetcher.h"
 
 #include <algorithm>
 
 #include "base/base64.h"
 #include "base/files/file_enumerator.h"
@@ skipping 219 matching lines @@
 
 void ContentHashFetcherJob::DoneCheckingForVerifiedContents(bool found) {
   if (IsCancelled())
     return;
   if (found) {
     VLOG(1) << "Found verified contents for " << extension_id_;
     DoneFetchingVerifiedContents(true);
   } else {
     VLOG(1) << "Missing verified contents for " << extension_id_
             << ", fetching...";
-    url_fetcher_.reset(
-        net::URLFetcher::Create(fetch_url_, net::URLFetcher::GET, this));
+    url_fetcher_ =
+        net::URLFetcher::Create(fetch_url_, net::URLFetcher::GET, this);
     url_fetcher_->SetRequestContext(request_context_);
     url_fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
                                net::LOAD_DO_NOT_SAVE_COOKIES |
                                net::LOAD_DISABLE_CACHE);
     url_fetcher_->SetAutomaticallyRetryOnNetworkChanges(3);
     url_fetcher_->Start();
   }
 }
 
 // Helper function to let us pass ownership of a string via base::Bind with the
@@ skipping 244 matching lines @@
 
   for (JobMap::iterator i = jobs_.begin(); i != jobs_.end(); ++i) {
     if (i->second.get() == job) {
       jobs_.erase(i);
       break;
     }
   }
 }
 
 }  // namespace extensions