Make cancel remove cancelled download from active queues at time of cancel.

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
 
@@ skipping 46 matching lines @@
 
   // Downloads that were interrupted by the OS.
   INTERRUPTED_COUNT,
 
   // Write sizes for downloads.
   WRITE_SIZE_COUNT,
 
   // Counts iterations of the BaseFile::AppendDataToFile() loop.
   WRITE_LOOP_COUNT,
 
+  // Downloads that were removed by the user.
+  REMOVED_COUNT,
+
   DOWNLOAD_COUNT_TYPES_LAST_ENTRY
 };
 
 // Increment one of the above counts.
 CONTENT_EXPORT void RecordDownloadCount(DownloadCountTypes type);
 
 // Record COMPLETED_COUNT and how long the download took.
 void RecordDownloadCompleted(const base::TimeTicks& start, int64 download_len);
 
 // 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);
 
 // Record WRITE_SIZE_COUNT and data_len.
 void RecordDownloadWriteSize(size_t data_len);
 
 // Record WRITE_LOOP_COUNT and number of loops.
 void RecordDownloadWriteLoopCount(int count);
 
 }  // namespace download_stats
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_STATS_H_