webkit: Remove use of ALLOW_THIS_IN_INITIALIZER_LIST.

webkit/fileapi/file_system_usage_cache.cc

 // Copyright (c) 2012 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 "webkit/fileapi/file_system_usage_cache.h"
 
 #include <utility>
 
 #include "base/debug/trace_event.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/pickle.h"
 #include "base/stl_util.h"
 
 namespace fileapi {
 
 namespace {
 const int64 kCloseDelaySeconds = 5;
 const size_t kMaxHandleCacheSize = 2;
 }  // namespace
 
 FileSystemUsageCache::FileSystemUsageCache(
     base::SequencedTaskRunner* task_runner)
-    : weak_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
+    : weak_factory_(this),
       task_runner_(task_runner) {
 }
 
 FileSystemUsageCache::~FileSystemUsageCache() {
   task_runner_ = NULL;
   CloseCacheFiles();
 }
 
 const base::FilePath::CharType FileSystemUsageCache::kUsageFileName[] =
     FILE_PATH_LITERAL(".usage");
@@ skipping 267 matching lines @@
   return !task_runner_ || task_runner_->RunsTasksOnCurrentThread();
 }
 
 bool FileSystemUsageCache::HasCacheFileHandle(const base::FilePath& file_path) {
   DCHECK(CalledOnValidThread());
   DCHECK_LE(cache_files_.size(), kMaxHandleCacheSize);
   return ContainsKey(cache_files_, file_path);
 }
 
 }  // namespace fileapi