Isolate initiation counts for downloads to their own histograms and improve

chrome/browser/download/download_util.h

 // Copyright (c) 2011 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_
 #pragma once
 
@@ skipping 155 matching lines @@
 // Check whether we can do the saving page operation for the specified URL.
 bool IsSavableURL(const GURL& url);
 
 // Record the total number of items and the number of in-progress items showing
 // in the shelf when it closes.  Set |autoclose| to true when the shelf is
 // closing itself, false when the user explicitly closed it.
 void RecordShelfClose(int size, int in_progress, bool autoclose);
 
 // Used for counting UMA stats. Similar to content's
 // download_stats::DownloadCountTypes but from the chrome layer.
-enum ChromeDownloadCountTypes {
+enum ChromeDownloadInitiationSources {
   // The download was initiated by navigating to a URL (e.g. by user click).
-  INITIATED_BY_NAVIGATION_COUNT = 0,
+  INITIATED_BY_NAVIGATION = 0,
 
   // The download was initiated by invoking a context menu within a page.
-  INITIATED_BY_CONTEXT_MENU_COUNT,
+  INITIATED_BY_CONTEXT_MENU,
 
   // The download was initiated by the WebStore installer.
-  INITIATED_BY_WEBSTORE_INSTALLER_COUNT,
+  INITIATED_BY_WEBSTORE_INSTALLER,
 
   // The download was initiated by the ImageBurner (cros).
-  INITIATED_BY_IMAGE_BURNER_COUNT,
+  INITIATED_BY_IMAGE_BURNER,
 
-  DOWNLOAD_COUNT_TYPES_LAST_ENTRY,
+  DOWNLOAD_INITIATION_SOURCES_LAST_ENTRY,
 };
 
-void RecordDownloadCount(ChromeDownloadCountTypes type);
+void RecordDownloadSource(ChromeDownloadInitiationSources source);
 
 }  // namespace download_util
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_