MacViews: Bubbles and dialogs behave more like sheets wrt main status

ui/views/widget/native_widget_mac_unittest.mm

Index: ui/views/widget/native_widget_mac_unittest.mm
diff --git a/ui/views/widget/native_widget_mac_unittest.mm b/ui/views/widget/native_widget_mac_unittest.mm
index 5a48f0257223f75064732e12b1a76061c18a7cd2..500ff97933c1666c63d950c2a8978c868eff0aa2 100644
--- a/ui/views/widget/native_widget_mac_unittest.mm
+++ b/ui/views/widget/native_widget_mac_unittest.mm
@@ -22,6 +22,7 @@
 #import "ui/events/test/cocoa_test_event_utils.h"
 #include "ui/events/test/event_generator.h"
 #import "ui/gfx/mac/coordinate_conversion.h"
+#include "ui/views/bubble/bubble_delegate.h"
 #import "ui/views/cocoa/bridged_native_widget.h"
 #import "ui/views/cocoa/native_widget_mac_nswindow.h"
 #include "ui/views/controls/button/label_button.h"
@@ -938,6 +939,20 @@ TEST_F(NativeWidgetMacTest, NativeProperties) {
   // Dialogs shouldn't take main status away from their parent.
   EXPECT_FALSE([dialog_widget->GetNativeWindow() canBecomeMainWindow]);
 
+  // Create a bubble widget with a parent: also shouldn't get main.
+  BubbleDelegateView* bubble_view = new BubbleDelegateView();
+  bubble_view->set_parent_window(regular_widget->GetNativeView());
+  Widget* bubble_widget = BubbleDelegateView::CreateBubble(bubble_view);
+  EXPECT_TRUE([bubble_widget->GetNativeWindow() canBecomeKeyWindow]);
+  EXPECT_FALSE([bubble_widget->GetNativeWindow() canBecomeMainWindow]);
+
+  // But a bubble without a parent should still be able to become main.
+  Widget* toplevel_bubble_widget =
+      BubbleDelegateView::CreateBubble(new BubbleDelegateView());
+  EXPECT_TRUE([toplevel_bubble_widget->GetNativeWindow() canBecomeKeyWindow]);
+  EXPECT_TRUE([toplevel_bubble_widget->GetNativeWindow() canBecomeMainWindow]);
+
+  toplevel_bubble_widget->CloseNow();
   regular_widget->CloseNow();
 }