When the download folder does not exist, change the download folder to a user's "Downloads"

chrome/browser/ui/download/download_tab_helper.cc

Index: chrome/browser/ui/download/download_tab_helper.cc
diff --git a/chrome/browser/ui/download/download_tab_helper.cc b/chrome/browser/ui/download/download_tab_helper.cc
index 54a95de7cb309ef8540421f3420cc00d67d88237..e40252328f4cc5cf606220b81b01c9fac1130c43 100644
--- a/chrome/browser/ui/download/download_tab_helper.cc
+++ b/chrome/browser/ui/download/download_tab_helper.cc
@@ -54,9 +54,6 @@ void DownloadTabHelper::OnSaveURL(const GURL& url) {
   dlm->DownloadUrl(url, tab_contents()->GetURL(), "", tab_contents());
 }
 
-// Used in automated testing to bypass prompting the user for file names.
-// Instead, the names and paths are hard coded rather than running them through
-// file name sanitation and extension / mime checking.
 bool DownloadTabHelper::SavePage(const FilePath& main_file,
                                  const FilePath& dir_path,
                                  SavePackage::SavePackageType save_type) {
@@ -65,9 +62,23 @@ bool DownloadTabHelper::SavePage(const FilePath& main_file,
 
   save_package_ =
       new SavePackage(tab_contents_wrapper_, save_type, main_file, dir_path);
+  // Skips GetSaveInfo() and directly calls Init().
+  // We do not have to explicitly disable the select file dialog
+  // since we skip the process that can show the dialog.
   return save_package_->Init();
 }
 
+string16 DownloadTabHelper::SavePageBasedOnDefaultPrefs() {
+  tab_contents()->Stop();
+
+  save_package_ = new SavePackage(tab_contents_wrapper_);
+  // Disables the select file dialog.
+  save_package_->SetShouldPromptUser(false);
+  // This GetSaveInfo() calls save_package_->Init() in the background.
+  save_package_->GetSaveInfo();
+  return tab_contents()->GetTitle();
+}
+
 bool DownloadTabHelper::CanDownload(int request_id) {
   if (delegate_)
     return delegate_->CanDownload(request_id);