Remove some PlatformFile uses from WebKit

webkit/browser/database/database_tracker.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 "webkit/browser/database/database_tracker.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/file_util.h"
+#include "base/files/file.h"
 #include "base/files/file_enumerator.h"
 #include "base/message_loop/message_loop_proxy.h"
-#include "base/platform_file.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "net/base/net_errors.h"
 #include "sql/connection.h"
 #include "sql/meta_table.h"
 #include "sql/transaction.h"
 #include "third_party/sqlite/sqlite3.h"
 #include "webkit/browser/database/database_quota_client.h"
 #include "webkit/browser/database/database_util.h"
 #include "webkit/browser/database/databases_table.h"
@@ skipping 795 matching lines @@
       continue;
     if (special_storage_policy_->IsStorageProtected(origin_url))
       continue;
     webkit_database::OriginInfo origin_info;
     std::vector<base::string16> databases;
     GetOriginInfo(*origin, &origin_info);
     origin_info.GetAllDatabaseNames(&databases);
 
     for (std::vector<base::string16>::iterator database = databases.begin();
          database != databases.end(); ++database) {
-      base::PlatformFile file_handle = base::CreatePlatformFile(
-          GetFullDBFilePath(*origin, *database),
-          base::PLATFORM_FILE_OPEN_ALWAYS |
-          base::PLATFORM_FILE_SHARE_DELETE |
-          base::PLATFORM_FILE_DELETE_ON_CLOSE |
-          base::PLATFORM_FILE_READ,
-          NULL, NULL);
-      base::ClosePlatformFile(file_handle);
+      base::File file(GetFullDBFilePath(*origin, *database),
+                      base::File::FLAG_OPEN_ALWAYS |
+                          base::File::FLAG_SHARE_DELETE |
+                          base::File::FLAG_DELETE_ON_CLOSE |
+                          base::File::FLAG_READ);
     }
     DeleteOrigin(*origin, true);
   }
 }
 
 
 void DatabaseTracker::Shutdown() {
   DCHECK(db_tracker_thread_.get());
   DCHECK(db_tracker_thread_->BelongsToCurrentThread());
   if (shutting_down_) {
@@ skipping 13 matching lines @@
   if (!db_tracker_thread_->BelongsToCurrentThread()) {
     db_tracker_thread_->PostTask(
         FROM_HERE,
         base::Bind(&DatabaseTracker::SetForceKeepSessionState, this));
     return;
   }
   force_keep_session_state_ = true;
 }
 
 }  // namespace webkit_database