Downloads: replace BrowserThread::FILE with task scheduler.

content/public/browser/download_item.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.
 //
 // Each download is represented by a DownloadItem, and all DownloadItems
 // are owned by the DownloadManager which maintains a global list of all
 // downloads. DownloadItems are created when a user initiates a download,
 // and exist for the duration of the browser life time.
 //
 // Download observers:
@@ skipping 279 matching lines @@
 
   // Full path to the downloaded or downloading file. This is the path to the
   // physical file, if one exists. It should be considered a hint; changes to
   // this value and renames of the file on disk are not atomic with each other.
   // May be empty if the in-progress path hasn't been determined yet or if the
   // download was interrupted.
   //
   // DO NOT USE THIS METHOD to access the target path of the DownloadItem. Use
   // GetTargetFilePath() instead. While the download is in progress, the
   // intermediate file named by GetFullPath() may be renamed or disappear
-  // completely on the FILE thread. The path may also be reset to empty when the
-  // download is interrupted.
+  // completely on the download sequence. The path may also be reset to empty
+  // when the download is interrupted.
   virtual const base::FilePath& GetFullPath() const = 0;
 
   // Target path of an in-progress download. We may be downloading to a
   // temporary or intermediate file (specified by GetFullPath()); this is the
   // name we will use once the download completes.
   // May be empty if the target path hasn't yet been determined.
   virtual const base::FilePath& GetTargetFilePath() const = 0;
 
   // If the download forced a path rather than requesting name determination,
   // return the path requested.
@@ skipping 145 matching lines @@
   // return |name|. Has no effect on the final target filename.
   virtual void SetDisplayName(const base::FilePath& name) = 0;
 
   // Debug/testing -------------------------------------------------------------
   virtual std::string DebugString(bool verbose) const = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DOWNLOAD_ITEM_H_