Convert "return local_var.Pass();" to "return local_var;".

services/url_response_disk_cache/url_response_disk_cache_db.cc

 // Copyright 2015 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 "services/url_response_disk_cache/url_response_disk_cache_db.h"
 
 #include <string.h>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 172 matching lines @@
   std::string key_string;
   std::string entry_string;
   Serialize(key.Pass(), &key_string);
   leveldb::Status status =
       db_->Get(leveldb::ReadOptions(), key_string, &entry_string);
   if (status.IsNotFound())
     return CacheEntryPtr();
   DCHECK(status.ok());
   CacheEntryPtr result;
   Deserialize(entry_string, &result);
-  return result.Pass();
+  return result;
 }
 
 void URLResponseDiskCacheDB::PutNew(const std::string& request_origin,
                                     const std::string& url,
                                     CacheEntryPtr entry) {
   CacheKeyPtr key = CacheKey::New();
   key->request_origin = request_origin;
   key->url = url;
   key->timestamp = base::Time::Now().ToInternalValue();
   Put(key.Pass(), entry.Pass());
@@ skipping 14 matching lines @@
   CacheEntryPtr result;
   if (it->Valid()) {
     Deserialize(it->key(), &key);
     if (key->request_origin == request_origin && key->url == url) {
       Deserialize(it->value(), &result);
       if (output_key) {
         *output_key = key.Pass();
       }
     }
   }
-  return result.Pass();
+  return result;
 }
 
 void URLResponseDiskCacheDB::Delete(CacheKeyPtr key) {
   std::string key_string;
   Serialize(key.Pass(), &key_string);
   leveldb::Status s = db_->Delete(leveldb::WriteOptions(), key_string);
   DCHECK(s.ok());
 }
 
 scoped_ptr<URLResponseDiskCacheDB::Iterator>
 URLResponseDiskCacheDB::GetIterator() {
   return make_scoped_ptr(new Iterator(db_));
 }
 
 URLResponseDiskCacheDB::~URLResponseDiskCacheDB() {}
 
 }  // namespace mojo