Preliminary work on resuming downloads whose connections have expired.

chrome/browser/cocoa/download_item_mac.mm

 // 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/cocoa/download_item_mac.h"
 
 #include "base/callback.h"
 #include "chrome/browser/browser_process.h"
 #import "chrome/browser/cocoa/download_item_controller.h"
 #include "chrome/browser/cocoa/download_util_mac.h"
@@ skipping 38 matching lines @@
       [item_controller_ remove];  // We're deleted now!
       break;
     case DownloadItem::COMPLETE:
       if (download->auto_opened()) {
         [item_controller_ remove];  // We're deleted now!
         return;
       }
       download_util::NotifySystemOfDownloadComplete(download->full_path());
       // fall through
     case DownloadItem::IN_PROGRESS:
+    case DownloadItem::INTERRUPTED:
     case DownloadItem::CANCELLED:
       [item_controller_ setStateFromDownload:download_model_.get()];
       break;
     default:
       NOTREACHED();
   }
 }
 
 void DownloadItemMac::LoadIcon() {
   IconManager* icon_manager = g_browser_process->icon_manager();
@@ skipping 18 matching lines @@
 }
 
 void DownloadItemMac::OnExtractIconComplete(IconManager::Handle handle,
                                             SkBitmap* icon_bitmap) {
   if (!icon_bitmap)
     return;
 
   NSImage* icon = gfx::SkBitmapToNSImage(*icon_bitmap);
   [item_controller_ setIcon:icon];
 }