Allow std::unordered_*.

net/disk_cache/simple/simple_index_file.cc

Index: net/disk_cache/simple/simple_index_file.cc
diff --git a/net/disk_cache/simple/simple_index_file.cc b/net/disk_cache/simple/simple_index_file.cc
index 3828649402d72220037d18e2d901d098a8104d8a..e44a809f836f58217c6824254ed129d32dd8dfd2 100644
--- a/net/disk_cache/simple/simple_index_file.cc
+++ b/net/disk_cache/simple/simple_index_file.cc
@@ -422,10 +422,7 @@ void SimpleIndexFile::Deserialize(const char* data, int data_len,
     return;
   }
 
-#if !defined(OS_WIN)
-  // TODO(gavinp): Consider using std::unordered_map.
-  entries->resize(index_metadata.GetNumberOfEntries() + kExtraSizeForMerge);
-#endif
+  entries->reserve(index_metadata.GetNumberOfEntries() + kExtraSizeForMerge);
   while (entries->size() < index_metadata.GetNumberOfEntries()) {
     uint64 hash_key;
     EntryMetadata entry_metadata;