[Mac] Enable MacViews site settings bubble behind --enable-mac-views-dialogs.

ui/views/bubble/bubble_delegate.cc

Index: ui/views/bubble/bubble_delegate.cc
diff --git a/ui/views/bubble/bubble_delegate.cc b/ui/views/bubble/bubble_delegate.cc
index fd0f112ef32a2a2383c772087dffc15ef1bc538f..17f277caf3bd5cc61b7b42f5ba64fc8ee9e94e40 100644
--- a/ui/views/bubble/bubble_delegate.cc
+++ b/ui/views/bubble/bubble_delegate.cc
@@ -106,8 +106,9 @@ Widget* BubbleDelegateView::CreateBubble(BubbleDelegateView* bubble_delegate) {
   // the parent frame and let DWM handle compositing.  If not, then we don't
   // want to allow the bubble to extend the frame because it will be clipped.
   bubble_delegate->set_adjust_if_offscreen(ui::win::IsAeroGlassEnabled());
-#elif defined(OS_LINUX) && !defined(OS_CHROMEOS)
+#elif (defined(OS_LINUX) && !defined(OS_CHROMEOS)) || defined(OS_MACOSX)
   // Linux clips bubble windows that extend outside their parent window bounds.
+  // Mac never adjusts.
   bubble_delegate->set_adjust_if_offscreen(false);
 #endif