MacViews: Enable views based Download recovery dialog behind secondary-ui-md flag.

chrome/browser/download/download_danger_prompt.h

Index: chrome/browser/download/download_danger_prompt.h
diff --git a/chrome/browser/download/download_danger_prompt.h b/chrome/browser/download/download_danger_prompt.h
index 5984adf3637174e73625669a0685c2ef5f92bfaf..fc9142dcdfe634fa12c3e8955b99d9777c2722fe 100644
--- a/chrome/browser/download/download_danger_prompt.h
+++ b/chrome/browser/download/download_danger_prompt.h
@@ -65,6 +65,14 @@ class DownloadDangerPrompt {
   // Records UMA stats for a download danger prompt event.
   static void RecordDownloadDangerPrompt(bool did_proceed,
                                          const content::DownloadItem& download);
+
+ private:
+  // Returns a toolkit-views based download danger prompt.
+  static DownloadDangerPrompt* CreateDownloadDangerPromptViews(
+      content::DownloadItem* item,
+      content::WebContents* web_contents,
+      bool show_context,
+      const OnDone& done);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_DANGER_PROMPT_H_