Use title parameter for select dialog

This change uses the existing |title| parameter to set the title when
creating select dialogs. If the |title| is left empty, get the title
based on the select dialog type.

Screenshot: http://screen/3MwL5RSCHVhVXN6

Bug: 1143994
Change-Id: I5b653f892e3e295180692ffa89428cc2472aa9ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2508671
Commit-Queue: Gavin Williams <gavinwill@chromium.org>
Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822504}

chrome/browser/ui/views/select_file_dialog_extension.cc

@@ -402,7 +402,9 @@ void SelectFileDialogExtension::SelectFileWithFileManagerParams(
   dialog_params.is_modal = (owner.window != nullptr);
   dialog_params.min_size = {kFileManagerMinimumWidth,
                             kFileManagerMinimumHeight};
-  dialog_params.title = file_manager::util::GetSelectFileDialogTitle(type);
+  dialog_params.title =
+      !title.empty() ? title
+                     : file_manager::util::GetSelectFileDialogTitle(type);
   if (base::FeatureList::IsEnabled(chromeos::features::kFilesNG)) {
     dialog_params.title_color = kFilePickerActiveTitleColor;
     dialog_params.title_inactive_color = kFilePickerInactiveTitleColor;