Mac: the return of the tab-modal-sheets patch.

chrome/browser/download/download_manager.cc

Index: chrome/browser/download/download_manager.cc
diff --git a/chrome/browser/download/download_manager.cc b/chrome/browser/download/download_manager.cc
index 21642efd2c9cce177b4cd6d33b5714d75c6a35c9..e0db75d271a80ed6c8d5badcffe260a45a248ee6 100644
--- a/chrome/browser/download/download_manager.cc
+++ b/chrome/browser/download/download_manager.cc
@@ -660,6 +660,21 @@ void DownloadManager::OnPathExistenceAvailable(DownloadCreateInfo* info) {
     if (!file_type_info.extensions[0][0].empty())
       file_type_info.extensions[0][0].erase(0, 1);  // drop the .
     file_type_info.include_all_files = true;
+#if defined(OS_MACOSX)
+    // If |contents| is NULL, file selection should theoretically run modeless.
+    // FIXME(viettrungluu): But we don't actually currently support modeless
+    // file selection dialogs on Mac. Does this ever happen? Should it? Better
+    // dcheck it.
+    DCHECK(contents);
+    select_file_dialog_->SelectFileInTab(SelectFileDialog::SELECT_SAVEAS_FILE,
+                                         string16(),
+                                         info->suggested_path,
+                                         &file_type_info,
+                                         0,
+                                         FILE_PATH_LITERAL(""),
+                                         contents,
+                                         info);
+#else
     gfx::NativeWindow owning_window =
         contents ? platform_util::GetTopLevel(contents->GetNativeView()) : NULL;
     select_file_dialog_->SelectFile(SelectFileDialog::SELECT_SAVEAS_FILE,
@@ -667,6 +682,7 @@ void DownloadManager::OnPathExistenceAvailable(DownloadCreateInfo* info) {
                                     info->suggested_path,
                                     &file_type_info, 0, FILE_PATH_LITERAL(""),
                                     owning_window, info);
+#endif
   } else {
     // No prompting for download, just continue with the suggested name.
     ContinueStartDownload(info, info->suggested_path);