Revert of Allow std::unordered_*.

net/disk_cache/simple/simple_index_file.cc

 // Copyright (c) 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 "net/disk_cache/simple/simple_index_file.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/files/file.h"
@@ skipping 405 matching lines @@
   if (!index_metadata.Deserialize(&pickle_it)) {
     LOG(ERROR) << "Invalid index_metadata on Simple Cache Index.";
     return;
   }
 
   if (!index_metadata.CheckIndexMetadata()) {
     LOG(ERROR) << "Invalid index_metadata on Simple Cache Index.";
     return;
   }
 
-  entries->reserve(index_metadata.GetNumberOfEntries() + kExtraSizeForMerge);
+#if !defined(OS_WIN)
+  // TODO(gavinp): Consider using std::unordered_map.
+  entries->resize(index_metadata.GetNumberOfEntries() + kExtraSizeForMerge);
+#endif
   while (entries->size() < index_metadata.GetNumberOfEntries()) {
     uint64_t hash_key;
     EntryMetadata entry_metadata;
     if (!pickle_it.ReadUInt64(&hash_key) ||
         !entry_metadata.Deserialize(&pickle_it)) {
       LOG(WARNING) << "Invalid EntryMetadata in Simple Index file.";
       entries->clear();
       return;
     }
     SimpleIndex::InsertInEntrySet(hash_key, entry_metadata, entries);
@@ skipping 36 matching lines @@
 bool SimpleIndexFile::LegacyIsIndexFileStale(
     base::Time cache_last_modified,
     const base::FilePath& index_file_path) {
   base::Time index_mtime;
   if (!simple_util::GetMTime(index_file_path, &index_mtime))
     return true;
   return index_mtime < cache_last_modified;
 }
 
 }  // namespace disk_cache