Refactor Pickle Read methods to use higher performance PickleIterator.

webkit/fileapi/file_system_directory_database.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_directory_database.h"
 
 #include <math.h>
 
 #include "base/location.h"
 #include "base/pickle.h"
@@ skipping 29 matching lines @@
       pickle->WriteInt64(time.ToInternalValue()))
     return true;
 
   NOTREACHED();
   return false;
 }
 
 bool FileInfoFromPickle(
     const Pickle& pickle,
     fileapi::FileSystemDirectoryDatabase::FileInfo* info) {
-  void* iter = NULL;
+  PickleIterator iter(pickle);
   std::string data_path;
   std::string name;
   int64 internal_time;
 
   if (pickle.ReadInt64(&iter, &info->parent_id) &&
       pickle.ReadString(&iter, &data_path) &&
       pickle.ReadString(&iter, &name) &&
       pickle.ReadInt64(&iter, &internal_time)) {
 #if defined(OS_POSIX)
     info->data_path = FilePath(data_path);
@@ skipping 478 matching lines @@
 
 void FileSystemDirectoryDatabase::HandleError(
     const tracked_objects::Location& from_here,
     leveldb::Status status) {
   LOG(ERROR) << "FileSystemDirectoryDatabase failed at: "
              << from_here.ToString() << " with error: " << status.ToString();
   db_.reset();
 }
 
 }  // namespace fileapi