Made the cancel from CancelDownloadOnRename go through the full cancel path,

content/browser/download/download_item.cc

 // 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.
 
 #include "content/browser/download/download_item.h"
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/format_macros.h"
 #include "base/i18n/case_conversion.h"
@@ skipping 349 matching lines @@
     // Small downloads might be complete before this method has
     // a chance to run.
     return;
   }
 
   download_stats::RecordDownloadCount(download_stats::CANCELLED_COUNT);
 
   TransitionTo(CANCELLED);
   StopProgressTimer();
   if (update_history)
-    download_manager_->DownloadCancelled(download_id_);
+    download_manager_->DownloadCancelledInternal(this);
 }
 
 void DownloadItem::MarkAsComplete() {
   // TODO(rdsmith): Change to DCHECK after http://crbug.com/85408 resolved.
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   DCHECK(all_data_saved_);
   TransitionTo(COMPLETE);
 }
 
@@ skipping 315 matching lines @@
     return name;
   }
   return state_info_.target_name;
 }
 
 FilePath DownloadItem::GetUserVerifiedFilePath() const {
   return (safety_state_ == DownloadItem::SAFE) ?
       GetTargetFilePath() : full_path_;
 }
 
+void DownloadItem::OffThreadCancel(DownloadFileManager* file_manager) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  request_handle_.CancelRequest();
+
+  BrowserThread::PostTask(
+      BrowserThread::FILE, FROM_HERE,
+      NewRunnableMethod(
+          file_manager, &DownloadFileManager::CancelDownload, download_id_));
+}
+
 void DownloadItem::Init(bool active) {
   // TODO(rdsmith): Change to DCHECK after http://crbug.com/85408 resolved.
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   UpdateTarget();
   if (active) {
     StartProgressTimer();
     download_stats::RecordDownloadCount(download_stats::START_COUNT);
   }
   VLOG(20) << __FUNCTION__ << "() " << DebugString(true);
@@ skipping 69 matching lines @@
         state_info_.target_name.value().c_str(),
         full_path().value().c_str());
   } else {
     description += base::StringPrintf(" url = \"%s\"", url_list.c_str());
   }
 
   description += " }";
 
   return description;
 }