Revert of Convert //net and //chromecast to std::unordered_*

net/disk_cache/simple/simple_backend_impl.h

 // 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.
 
 #ifndef NET_DISK_CACHE_SIMPLE_SIMPLE_BACKEND_IMPL_H_
 #define NET_DISK_CACHE_SIMPLE_SIMPLE_BACKEND_IMPL_H_
 
 #include <stdint.h>
 
 #include <string>
-#include <unordered_map>
 #include <utility>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
+#include "base/containers/hash_tables.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string_split.h"
 #include "base/task_runner.h"
 #include "base/time/time.h"
 #include "net/base/cache_type.h"
 #include "net/disk_cache/disk_cache.h"
 #include "net/disk_cache/simple/simple_entry_impl.h"
@@ skipping 82 matching lines @@
                        const CompletionCallback& callback) override;
   int CalculateSizeOfAllEntries(const CompletionCallback& callback) override;
   scoped_ptr<Iterator> CreateIterator() override;
   void GetStats(base::StringPairs* stats) override;
   void OnExternalCacheHit(const std::string& key) override;
 
  private:
   class SimpleIterator;
   friend class SimpleIterator;
 
-  using EntryMap = std::unordered_map<uint64_t, SimpleEntryImpl*>;
+  typedef base::hash_map<uint64_t, SimpleEntryImpl*> EntryMap;
 
-  using InitializeIndexCallback =
-      base::Callback<void(base::Time mtime, uint64_t max_size, int result)>;
+  typedef base::Callback<void(base::Time mtime, uint64_t max_size, int result)>
+      InitializeIndexCallback;
 
   class ActiveEntryProxy;
   friend class ActiveEntryProxy;
 
   // Return value of InitCacheStructureOnDisk().
   struct DiskStatResult {
     base::Time cache_dir_mtime;
     uint64_t max_size;
     bool detected_magic_number_mismatch;
     int net_error;
@@ skipping 70 matching lines @@
 
   int orig_max_size_;
   const SimpleEntryImpl::OperationsMode entry_operations_mode_;
 
   EntryMap active_entries_;
 
   // The set of all entries which are currently being doomed. To avoid races,
   // these entries cannot have Doom/Create/Open operations run until the doom
   // is complete. The base::Closure map target is used to store deferred
   // operations to be run at the completion of the Doom.
-  std::unordered_map<uint64_t, std::vector<base::Closure>>
-      entries_pending_doom_;
+  base::hash_map<uint64_t, std::vector<base::Closure>> entries_pending_doom_;
 
   net::NetLog* const net_log_;
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_BACKEND_IMPL_H_