polychrome: disable ZoomBubbleViewsBrowserTest.NonImmersiveFullscreen on Mac

This test doesn't work on Mac in any mode; it historically hasn't been run
on Mac at all. Something is up with the fullscreen transition it does.

TBR=robliao@chromium.org

Bug: 824757,817408
Change-Id: Ie32cabcaf3d69e7b6944cedb17a2a0ad61da9966
Reviewed-on: https://chromium-review.googlesource.com/975625Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545083}

chrome/browser/ui/views/location_bar/zoom_bubble_view_browsertest.cc

@@ -49,6 +49,9 @@ class ZoomBubbleViewsBrowserTest : public ZoomBubbleBrowserTest {
 // TODO(linux_aura) http://crbug.com/163931
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_AURA)
 #define MAYBE_NonImmersiveFullscreen DISABLED_NonImmersiveFullscreen
+#elif defined(OS_MACOSX)
+// Trips AppKit assert on Mac: https://crbug.com/824757
+#define MAYBE_NonImmersiveFullscreen DISABLED_NonImmersiveFullscreen
 #else
 #define MAYBE_NonImmersiveFullscreen NonImmersiveFullscreen
 #endif