base: Move MemoryMappedFile out of file_util.h and into its own header file.

chrome/browser/spellchecker/spellcheck_hunspell_dictionary.cc

 // 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.
 
 #include "chrome/browser/spellchecker/spellcheck_hunspell_dictionary.h"
 
 #include "base/file_util.h"
+#include "base/files/memory_mapped_file.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "chrome/browser/spellchecker/spellcheck_service.h"
 #include "chrome/browser/spellchecker/spellcheck_platform_mac.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/spellcheck_common.h"
 #include "chrome/common/spellcheck_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
@@ skipping 67 matching lines @@
   PathService::Get(chrome::DIR_USER_DATA, &user_dir);
   base::FilePath fallback = user_dir.Append(file->path.BaseName());
   if (!file_util::PathExists(file->path) && file_util::PathExists(fallback))
     file->path = fallback;
 #endif
 
   // Read the dictionary file and scan its data to check for corruption. The
   // scoping closes the memory-mapped file before it is opened or deleted.
   bool bdict_is_valid;
   {
-    file_util::MemoryMappedFile map;
+    base::MemoryMappedFile map;
     bdict_is_valid = file_util::PathExists(file->path) &&
         map.Initialize(file->path) &&
         hunspell::BDict::Verify(reinterpret_cast<const char*>(map.data()),
                                 map.length());
   }
   if (bdict_is_valid) {
     file->descriptor = base::CreatePlatformFile(
         file->path,
         base::PLATFORM_FILE_READ | base::PLATFORM_FILE_OPEN,
         NULL,
@@ skipping 235 matching lines @@
 void SpellcheckHunspellDictionary::InformListenersOfInitialization() {
   FOR_EACH_OBSERVER(Observer, observers_, OnHunspellDictionaryInitialized());
 }
 
 void SpellcheckHunspellDictionary::InformListenersOfDownloadFailure() {
   download_status_ = DOWNLOAD_FAILED;
   FOR_EACH_OBSERVER(Observer,
                     observers_,
                     OnHunspellDictionaryDownloadFailure());
 }