[Downloads] Consolidate MOTW annotation APIs into a single API.

content/browser/download/base_file_linux.cc

Index: content/browser/download/base_file_linux.cc
diff --git a/content/browser/download/base_file_linux.cc b/content/browser/download/base_file_linux.cc
deleted file mode 100644
index 6c62be3230232fcae9c9e1b00f027779bcf78cf1..0000000000000000000000000000000000000000
--- a/content/browser/download/base_file_linux.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// 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 "content/browser/download/base_file.h"
-
-#include "content/browser/download/file_metadata_linux.h"
-#include "content/public/browser/browser_thread.h"
-
-namespace content {
-
-DownloadInterruptReason BaseFile::AnnotateWithSourceInformation(
-    const std::string& client_guid,
-    const GURL& source_url,
-    const GURL& referrer_url) {
-  DCHECK_CURRENTLY_ON(BrowserThread::FILE);
-  DCHECK(!detached_);
-
-  AddOriginMetadataToFile(full_path_, source_url, referrer_url);
-  return DOWNLOAD_INTERRUPT_REASON_NONE;
-}
-
-}  // namespace content