Remove uses of base::hash_map from //chrome

chrome/browser/media_galleries/mac/mtp_device_delegate_impl_mac.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_MEDIA_GALLERIES_MAC_MTP_DEVICE_DELEGATE_IMPL_MAC_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_MAC_MTP_DEVICE_DELEGATE_IMPL_MAC_H_
 
 #include <stdint.h>
 
 #include <list>
 #include <map>
 #include <memory>
 #include <vector>
 
-#include "base/containers/hash_tables.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h"
 
 // Delegate for presenting an Image Capture device through the filesystem
 // API. The synthetic filesystem will be rooted at the constructed location,
 // and names of all files notified through the ItemAdded call will be
 // all appear as children of that directory. (ItemAdded calls with directories
@@ skipping 123 matching lines @@
   // has been read.
   void NotifyReadDir();
 
   std::string device_id_;
   base::FilePath root_path_;
 
   // Interface object for the camera underlying this MTP session.
   std::unique_ptr<DeviceListener> camera_interface_;
 
   // Stores a map from filename to file metadata received from the camera.
-  base::hash_map<base::FilePath::StringType,
-                 base::File::Info> file_info_;
+  std::map<base::FilePath::StringType, base::File::Info> file_info_;
 
   // List of filenames received from the camera.
   std::vector<base::FilePath> file_paths_;
 
   // Set to true when all file metadata has been received from the camera.
   bool received_all_files_;
 
   struct ReadFileRequest {
     ReadFileRequest();
     ReadFileRequest(const std::string& request_file,
@@ skipping 27 matching lines @@
 
   ReadFileTransactionList read_file_transactions_;
   ReadDirTransactionList read_dir_transactions_;
 
   base::WeakPtrFactory<MTPDeviceDelegateImplMac> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MTPDeviceDelegateImplMac);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_MAC_MTP_DEVICE_DELEGATE_IMPL_MAC_H_