[Android Downloads] Long-press menu item "Download Link" should delegate job to OfflinePages backen…

content/browser/download/download_resource_handler.cc

Index: content/browser/download/download_resource_handler.cc
diff --git a/content/browser/download/download_resource_handler.cc b/content/browser/download/download_resource_handler.cc
index a0acc44e3ba78627e536e8aec1d0d887d43fdae1..5dadcaa5e60ffe7f0eaba41721cbbe9593242ed9 100644
--- a/content/browser/download/download_resource_handler.cc
+++ b/content/browser/download/download_resource_handler.cc
@@ -196,8 +196,13 @@ void DownloadResourceHandler::OnStart(
     const DownloadUrlParameters::OnStartedCallback& callback) {
   // If the user cancels the download, then don't call start. Instead ignore the
   // download entirely.
-  if (create_info->result == DOWNLOAD_INTERRUPT_REASON_USER_CANCELED &&
-      create_info->download_id == DownloadItem::kInvalidId) {
+  bool download_canceled =
+      create_info->result == DOWNLOAD_INTERRUPT_REASON_USER_CANCELED &&
+      create_info->download_id == DownloadItem::kInvalidId;
+  // Also don't start a download if it has to be handed off to OfflinePages.
+  download_canceled = download_canceled ||
+      create_info->result == DOWNLOAD_INTERRUPT_REASON_PAGE_DOWNLOAD_HANDOFF;
+  if (download_canceled) {
     if (!callback.is_null())
       BrowserThread::PostTask(
           BrowserThread::UI, FROM_HERE,