[Resumption 12/12] Support resuming interrupted downloads from the downloads page.

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 127 matching lines @@
     download_item->GetFileNameToReportUser().LossyDisplayName();
   file_name = base::i18n::GetDisplayStringInLTRDirectionality(file_name);
   file_value->SetString("file_name", file_name);
   file_value->SetString("url", download_item->GetURL().spec());
   file_value->SetBoolean("otr", incognito);
   file_value->SetInteger("total", static_cast<int>(
       download_item->GetTotalBytes()));
   file_value->SetBoolean("file_externally_removed",
                          download_item->GetFileExternallyRemoved());
   file_value->SetBoolean("retry", false); // Overridden below if needed.
+  file_value->SetBoolean("resume", download_item->CanResume());
 
   if (download_item->IsInProgress()) {
     if (download_item->IsDangerous()) {
       file_value->SetString("state", "DANGEROUS");
       // These are the only danger states that the UI is equipped to handle.
       DCHECK(download_item->GetDangerType() ==
                  content::DOWNLOAD_DANGER_TYPE_DANGEROUS_FILE ||
              download_item->GetDangerType() ==
                  content::DOWNLOAD_DANGER_TYPE_DANGEROUS_URL ||
              download_item->GetDangerType() ==
@@ skipping 24 matching lines @@
     file_value->SetString("progress_status_text",
         download_util::GetProgressStatusText(download_item));
 
     file_value->SetInteger("percent",
         static_cast<int>(download_item->PercentComplete()));
     file_value->SetInteger("received",
         static_cast<int>(download_item->GetReceivedBytes()));
     file_value->SetString("last_reason_text",
                           download_model.GetInterruptReasonText());
     if (content::DOWNLOAD_INTERRUPT_REASON_CRASH ==
-        download_item->GetLastReason())
+        download_item->GetLastReason() && !download_item->CanResume())
       file_value->SetBoolean("retry", true);
   } else if (download_item->IsCancelled()) {
     file_value->SetString("state", "CANCELLED");
     file_value->SetBoolean("retry", true);
   } else if (download_item->IsComplete()) {
     DCHECK(!download_item->IsDangerous());
     file_value->SetString("state", "COMPLETE");
   } else {
     NOTREACHED() << "state undefined";
   }
@@ skipping 338 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);
 }