Move download UMA functions to their own file in content. Also fire the chrome-only notification ...

content/browser/download/download_stats.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.
+//
+// Holds helpers for gathering UMA stats about downloads.
+
+#ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_STATS_H_
+#define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_STATS_H_
+#pragma once
+
+#include <string>
+
+#include "base/basictypes.h"
+
+namespace base {
+class TimeTicks;
+}
+
+namespace download_stats {
+
+// We keep a count of how often various events occur in the
+// histogram "Download.Counts".
+enum DownloadCountTypes {
+  // The download was initiated by navigating to a URL (e.g. by user
+  // click).
+  INITIATED_BY_NAVIGATION_COUNT = 0,
+
+  // The download was initiated by invoking a context menu within a page.
+  INITIATED_BY_CONTEXT_MENU_COUNT,
+
+  // The download was initiated when the SavePackage system rejected
+  // a Save Page As ... by returning false from
+  // SavePackage::IsSaveableContents().
+  INITIATED_BY_SAVE_PACKAGE_FAILURE_COUNT,
+
+  // The download was initiated by a drag and drop from a drag-and-drop
+  // enabled web application.
+  INITIATED_BY_DRAG_N_DROP_COUNT,
+
+  // The download was initiated by explicit RPC from the renderer process
+  // (e.g. by Alt-click).
+  INITIATED_BY_RENDERER_COUNT,
+
+  // Downloads that made it to DownloadResourceHandler -- all of the
+  // above minus those blocked by DownloadThrottlingResourceHandler.
+  UNTHROTTLED_COUNT,
+
+  // Downloads that actually complete.
+  COMPLETED_COUNT,
+
+  // Downloads that are cancelled before completion (user action or error).
+  CANCELLED_COUNT,
+
+  // Downloads that are started. Should be equal to UNTHROTTLED_COUNT.
+  START_COUNT,
+
+  // Downloads that were interrupted by the OS.
+  INTERRUPTED_COUNT,
+
+  DOWNLOAD_COUNT_TYPES_LAST_ENTRY
+};
+
+// Increment one of the above counts.
+void RecordDownloadCount(DownloadCountTypes type);
+
+// Record COMPLETED_COUNT and how long the download took.
+void RecordDownloadCompleted(const base::TimeTicks& start);
+
+// Record INTERRUPTED_COUNT, |error|, |received| and |total| bytes.
+void RecordDownloadInterrupted(int error, int64 received, int64 total);
+
+// Records the mime type of the download.
+void RecordDownloadMimeType(const std::string& mime_type);
+
+}  // namespace download_util

[Paweł Hajdan Jr., 2011/08/16 23:36:13]

nit: download_stats

[jam, 2011/08/16 23:44:40]

Done.

+
+#endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_STATS_H_