[reland] Bring up BrowserActionInteractiveTest on Mac.

chrome/browser/ui/views/toolbar/browser_action_test_util_views.cc

Index: chrome/browser/ui/views/toolbar/browser_action_test_util_views.cc
diff --git a/chrome/browser/ui/views/toolbar/browser_action_test_util_views.cc b/chrome/browser/ui/views/toolbar/browser_action_test_util_views.cc
index 78e6cfe890433d729575288cfa9cbfab7708f9e8..0a5f6c0bfd723480cf0c09ff279d7ad6ceb6aebc 100644
--- a/chrome/browser/ui/views/toolbar/browser_action_test_util_views.cc
+++ b/chrome/browser/ui/views/toolbar/browser_action_test_util_views.cc
@@ -167,6 +167,12 @@ gfx::NativeView BrowserActionTestUtil::GetPopupNativeView() {
   return popup_owner ? popup_owner->GetPopupNativeView() : nullptr;
 }
 
+bool BrowserActionTestUtil::WaitForPopup() {
+  // TODO(tapted): Implement this for MacViews.
+  NOTIMPLEMENTED();
+  return HasPopup();
+}
+
 bool BrowserActionTestUtil::HasPopup() {
   return GetPopupNativeView() != nullptr;
 }