Migrate signin error messages to the new avatar bubble

chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm

Index: chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm
diff --git a/chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm b/chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm
index e1b9ad10616915abbac391c296f85f1856ca90da..0a6a6134b26bdb89c121e19348eb79bba8b4b33d 100644
--- a/chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm
+++ b/chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm
@@ -141,8 +141,22 @@ class ProfileInfoUpdateObserver : public ProfileInfoCacheObserver,
 - (void)showAvatarBubble:(NSView*)anchor
                 withMode:(BrowserWindow::AvatarBubbleMode)mode
          withServiceType:(signin::GAIAServiceType)serviceType {
-  if (menuController_)
+  if (menuController_) {
+    if (switches::IsNewAvatarMenu()) {
+      profiles::BubbleViewMode viewMode;
+      profiles::TutorialMode tutorialMode;
+      profiles::BubbleViewModeFromAvatarBubbleMode(
+          mode, &viewMode, &tutorialMode);
+      if (tutorialMode != profiles::TUTORIAL_MODE_NONE) {
+        ProfileChooserController* profileChooserController =
+            base::mac::ObjCCastStrict<ProfileChooserController*>(
+                menuController_);
+        [profileChooserController setTutorialMode:tutorialMode];
+        [profileChooserController initMenuContentsWithView:viewMode];
+      }
+    }
     return;
+  }
 
   DCHECK(chrome::IsCommandEnabled(browser_, IDC_SHOW_AVATAR_MENU));