Convert //chrome/browser/supervised_user from scoped_ptr to std::unique_ptr

chrome/browser/supervised_user/experimental/supervised_user_blacklist.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 "chrome/browser/supervised_user/experimental/supervised_user_blacklist.h"
 
 #include <algorithm>
 #include <cstring>
 #include <fstream>
 
 #include "base/files/file_path.h"
 #include "base/files/memory_mapped_file.h"
 #include "content/public/browser/browser_thread.h"
 #include "url/gurl.h"
 
 using content::BrowserThread;
 
 namespace {
 
-scoped_ptr<std::vector<SupervisedUserBlacklist::Hash> >
+std::unique_ptr<std::vector<SupervisedUserBlacklist::Hash>>
 ReadFromBinaryFileOnFileThread(const base::FilePath& path) {
   DCHECK(BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
 
-  scoped_ptr<std::vector<SupervisedUserBlacklist::Hash> > host_hashes(
+  std::unique_ptr<std::vector<SupervisedUserBlacklist::Hash>> host_hashes(
       new std::vector<SupervisedUserBlacklist::Hash>);
 
   base::MemoryMappedFile file;
   file.Initialize(path);
   if (!file.IsValid())
     return host_hashes;
 
   size_t size = file.length();
   if (size <= 0 || size % base::kSHA1Length != 0)
     return host_hashes;
@@ skipping 44 matching lines @@
           base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN).get(),
       FROM_HERE,
       base::Bind(&ReadFromBinaryFileOnFileThread, path),
       base::Bind(&SupervisedUserBlacklist::OnReadFromFileCompleted,
                  weak_ptr_factory_.GetWeakPtr(),
                  done_callback));
 }
 
 void SupervisedUserBlacklist::OnReadFromFileCompleted(
     const base::Closure& done_callback,
-    scoped_ptr<std::vector<Hash> > host_hashes) {
+    std::unique_ptr<std::vector<Hash>> host_hashes) {
   host_hashes_.swap(*host_hashes);
   LOG_IF(WARNING, host_hashes_.empty()) << "Got empty blacklist";
 
   if (!done_callback.is_null())
     done_callback.Run();
 }