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

net/disk_cache/simple/simple_index.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_INDEX_H_
 #define NET_DISK_CACHE_SIMPLE_SIMPLE_INDEX_H_
 
 #include <stdint.h>
 
 #include <list>
-#include <unordered_map>
-#include <unordered_set>
 #include <vector>
 
 #include "base/callback.h"
+#include "base/containers/hash_tables.h"
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "net/base/cache_type.h"
@@ skipping 85 matching lines @@
   // iff the entry exist in the index.
   bool UseIfExists(uint64_t entry_hash);
 
   void WriteToDisk();
 
   // Update the size (in bytes) of an entry, in the metadata stored in the
   // index. This should be the total disk-file size including all streams of the
   // entry.
   bool UpdateEntrySize(uint64_t entry_hash, int64_t entry_size);
 
-  using EntrySet = std::unordered_map<uint64_t, EntryMetadata>;
+  typedef base::hash_map<uint64_t, EntryMetadata> EntrySet;
 
   static void InsertInEntrySet(uint64_t entry_hash,
                                const EntryMetadata& entry_metadata,
                                EntrySet* entry_set);
 
   // Executes the |callback| when the index is ready. Allows multiple callbacks.
   int ExecuteWhenReady(const net::CompletionCallback& callback);
 
   // Returns entries from the index that have last accessed time matching the
   // range between |initial_time| and |end_time| where open intervals are
@@ skipping 48 matching lines @@
   const net::CacheType cache_type_;
   uint64_t cache_size_;  // Total cache storage size in bytes.
   uint64_t max_size_;
   uint64_t high_watermark_;
   uint64_t low_watermark_;
   bool eviction_in_progress_;
   base::TimeTicks eviction_start_time_;
 
   // This stores all the entry_hash of entries that are removed during
   // initialization.
-  std::unordered_set<uint64_t> removed_entries_;
+  base::hash_set<uint64_t> removed_entries_;
   bool initialized_;
   IndexInitMethod init_method_;
 
   scoped_ptr<SimpleIndexFile> index_file_;
 
   scoped_refptr<base::SingleThreadTaskRunner> io_thread_;
 
   // All nonstatic SimpleEntryImpl methods should always be called on the IO
   // thread, in all cases. |io_thread_checker_| documents and enforces this.
   base::ThreadChecker io_thread_checker_;
@@ skipping 11 matching lines @@
 
   // Set to true when the app is on the background. When the app is in the
   // background we can write the index much more frequently, to insure fresh
   // index on next startup.
   bool app_on_background_;
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_INDEX_H_