Preliminary work on resuming downloads whose connections have expired.

chrome/browser/gtk/download_item_gtk.cc

 // Copyright (c) 2010 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/gtk/download_item_gtk.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "app/slide_animation.h"
 #include "app/text_elider.h"
@@ skipping 334 matching lines @@
     LoadIcon();
 
     UpdateTooltip();
   }
 
   switch (download->state()) {
     case DownloadItem::REMOVING:
       parent_shelf_->RemoveDownloadItem(this);  // This will delete us!
       return;
     case DownloadItem::CANCELLED:
+    case DownloadItem::INTERRUPTED:
       StopDownloadProgress();
       gtk_widget_queue_draw(progress_area_.get());
       break;
     case DownloadItem::COMPLETE:
       if (download->auto_opened()) {
         parent_shelf_->RemoveDownloadItem(this);  // This will delete us!
         return;
       }
       StopDownloadProgress();
 
@@ skipping 483 matching lines @@
 
 void DownloadItemGtk::OnDangerousAccept(GtkWidget* button) {
   UMA_HISTOGRAM_LONG_TIMES("clickjacking.save_download",
                            base::Time::Now() - creation_time_);
   get_download()->DangerousDownloadValidated();
 }
 
 void DownloadItemGtk::OnDangerousDecline(GtkWidget* button) {
   UMA_HISTOGRAM_LONG_TIMES("clickjacking.discard_download",
                            base::Time::Now() - creation_time_);
-  if (get_download()->state() == DownloadItem::IN_PROGRESS)
+  if (get_download()->IsPartialDownload())
     get_download()->Cancel(true);
   get_download()->Remove(true);
 }