A few minor changes to the chrome.downloads extension API

chrome/browser/download/download_util.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.
 //
 // Download utilities.
 
 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
 
 #include <string>
@@ skipping 168 matching lines @@
 
   // The download was initiated by the ImageBurner (cros).
   INITIATED_BY_IMAGE_BURNER,
 
   // The download was initiated by the plugin installer.
   INITIATED_BY_PLUGIN_INSTALLER,
 
   // The download was initiated by the PDF plugin..
   INITIATED_BY_PDF_SAVE,
 
+  // The download was initiated by chrome.downloads.download().
+  INITIATED_BY_EXTENSION,
+
   CHROME_DOWNLOAD_SOURCE_LAST_ENTRY,
 };
 
 // Increment one of the above counts.
 void RecordDownloadCount(ChromeDownloadCountTypes type);
 
 // Record initiation of a download from a specific source.
 void RecordDownloadSource(ChromeDownloadSource source);
 
 }  // namespace download_util
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_