MacViews: Allow the toolkit-views Enterprise Signin Confirmation Dialog to be used

chrome/browser/ui/cocoa/tab_dialogs_views_mac.mm

Index: chrome/browser/ui/cocoa/tab_dialogs_views_mac.mm
diff --git a/chrome/browser/ui/cocoa/tab_dialogs_views_mac.mm b/chrome/browser/ui/cocoa/tab_dialogs_views_mac.mm
index 6187e48107d1ac79a11c299c075a110bbe1f934a..d71c1f239b9f957b6f8c11b4e3a784cb5a5031a8 100644
--- a/chrome/browser/ui/cocoa/tab_dialogs_views_mac.mm
+++ b/chrome/browser/ui/cocoa/tab_dialogs_views_mac.mm
@@ -5,6 +5,7 @@
 #include "chrome/browser/ui/cocoa/tab_dialogs_views_mac.h"
 
 #include "chrome/browser/ui/views/collected_cookies_views.h"
+#include "chrome/browser/ui/views/sync/profile_signin_confirmation_dialog_views.h"
 
 TabDialogsViewsMac::TabDialogsViewsMac(content::WebContents* contents)
     : TabDialogsCocoa(contents) {}
@@ -15,3 +16,12 @@ void TabDialogsViewsMac::ShowCollectedCookies() {
   // Deletes itself on close.
   new CollectedCookiesViews(web_contents());
 }
+
+void TabDialogsViewsMac::ShowProfileSigninConfirmation(
+    Browser* browser,
+    Profile* profile,
+    const std::string& username,
+    std::unique_ptr<ui::ProfileSigninConfirmationDelegate> delegate) {
+  ProfileSigninConfirmationDialogViews::ShowDialog(browser, profile, username,
+                                                   std::move(delegate));
+}