Pass Callback by value on PostTaskAndReply family

storage/browser/quota/quota_manager.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 "storage/browser/quota/quota_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1794 matching lines @@
 void QuotaManager::DeleteOnCorrectThread() const {
   if (!io_thread_->BelongsToCurrentThread() &&
       io_thread_->DeleteSoon(FROM_HERE, this)) {
     return;
   }
   delete this;
 }
 
 void QuotaManager::PostTaskAndReplyWithResultForDBThread(
     const tracked_objects::Location& from_here,
-    const base::Callback<bool(QuotaDatabase*)>& task,
-    const base::Callback<void(bool)>& reply) {
+    base::Callback<bool(QuotaDatabase*)> task,
+    base::Callback<void(bool)> reply) {
   // Deleting manager will post another task to DB thread to delete
   // |database_|, therefore we can be sure that database_ is alive when this
   // task runs.
   base::PostTaskAndReplyWithResult(
-      db_thread_.get(),
-      from_here,
-      base::Bind(task, base::Unretained(database_.get())),
-      reply);
+      db_thread_.get(), from_here,
+      base::Bind(std::move(task), base::Unretained(database_.get())),
+      std::move(reply));
 }
 
 // static
 int64_t QuotaManager::CallGetAmountOfFreeDiskSpace(
     GetVolumeInfoFn get_volume_info_fn,
     const base::FilePath& profile_path) {
   // crbug.com/349708
   TRACE_EVENT0("io", "CallSystemGetAmountOfFreeDiskSpace");
   if (!base::CreateDirectory(profile_path)) {
     LOG(WARNING) << "Create directory failed for path" << profile_path.value();
@@ skipping 21 matching lines @@
   int64_t total = base::SysInfo::AmountOfTotalDiskSpace(path);
   if (total < 0)
     return false;
 
   *available_space = static_cast<uint64_t>(available);
   *total_size = static_cast<uint64_t>(total);
   return true;
 }
 
 }  // namespace storage