Modified cancel and interrupt processing to avoid race with history.

chrome/browser/ui/webui/downloads_dom_handler.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 "chrome/browser/ui/webui/downloads_dom_handler.h"
 
 #include <algorithm>
 #include <functional>
 
 #include "base/basictypes.h"
@@ skipping 202 matching lines @@
   if (file) {
     // TODO(rdsmith): Change to DCHECK when http://crbug.com/84508 is fixed.
     CHECK_NE(DownloadHistory::kUninitializedHandle, file->db_handle());
     file->Remove();
   }
 }
 
 void DownloadsDOMHandler::HandleCancel(const ListValue* args) {
   DownloadItem* file = GetDownloadByValue(args);
   if (file)
-    file->Cancel(true);
+    file->Cancel();
 }
 
 void DownloadsDOMHandler::HandleClearAll(const ListValue* args) {
   download_manager_->RemoveAllDownloads();
 }
 
 // DownloadsDOMHandler, private: ----------------------------------------------
 
 void DownloadsDOMHandler::SendCurrentDownloads() {
   ListValue results_value;
@@ skipping 32 matching lines @@
   return NULL;
 }
 
 DownloadItem* DownloadsDOMHandler::GetDownloadByValue(const ListValue* args) {
   int id;
   if (ExtractIntegerValue(args, &id)) {
     return GetDownloadById(id);
   }
   return NULL;
 }