Remove uses of base::hash_map from //chrome

chrome/browser/command_updater.h

 // 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.
 
 #ifndef CHROME_BROWSER_COMMAND_UPDATER_H_
 #define CHROME_BROWSER_COMMAND_UPDATER_H_
 
 #include <memory>
+#include <unordered_map>
 
-#include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "ui/base/window_open_disposition.h"
 
 class CommandObserver;
 class CommandUpdaterDelegate;
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // CommandUpdater class
 //
@@ skipping 49 matching lines @@
   class Command;
 
   // Get a Command node for a given command ID, creating an entry if it doesn't
   // exist if desired.
   Command* GetCommand(int id, bool create);
 
   // The delegate is responsible for executing commands.
   CommandUpdaterDelegate* delegate_;
 
   // This is a map of command IDs to states and observer lists
-  base::hash_map<int, std::unique_ptr<Command>> commands_;
+  std::unordered_map<int, std::unique_ptr<Command>> commands_;
 
   DISALLOW_COPY_AND_ASSIGN(CommandUpdater);
 };
 
 #endif  // CHROME_BROWSER_COMMAND_UPDATER_H_