Allow dragging a download only after the download is complete.

chrome/browser/ui/webui/downloads_dom_handler.cc

 // Copyright (c) 2012 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 320 matching lines @@
   content::DownloadItem* file = GetDownloadByValue(args);
   if (file)
     file->OpenDownload();
 }
 
 void DownloadsDOMHandler::HandleDrag(const base::ListValue* args) {
   CountDownloadsDOMEvents(DOWNLOADS_DOM_EVENT_DRAG);
   content::DownloadItem* file = GetDownloadByValue(args);
   content::WebContents* web_contents = GetWebUIWebContents();
   // |web_contents| is only NULL in the test.
-  if (!file || !web_contents)
+  if (!file || !web_contents || !file->IsComplete())
     return;
   gfx::Image* icon = g_browser_process->icon_manager()->LookupIcon(
-      file->GetUserVerifiedFilePath(), IconLoader::NORMAL);
+      file->GetTargetFilePath(), IconLoader::NORMAL);
   gfx::NativeView view = web_contents->GetNativeView();
   {
     // Enable nested tasks during DnD, while |DragDownload()| blocks.
     MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
     download_util::DragDownload(file, icon, view);
   }
 }
 
 void DownloadsDOMHandler::HandleSaveDangerous(const base::ListValue* args) {
   CountDownloadsDOMEvents(DOWNLOADS_DOM_EVENT_SAVE_DANGEROUS);
@@ skipping 155 matching lines @@
 }
 
 void DownloadsDOMHandler::CallDownloadsList(const base::ListValue& downloads) {
   web_ui()->CallJavascriptFunction("downloadsList", downloads);
 }
 
 void DownloadsDOMHandler::CallDownloadUpdated(
     const base::ListValue& download_item) {
   web_ui()->CallJavascriptFunction("downloadUpdated", download_item);
 }