Remove --enable-mac-views-app-list on Mac

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 46e52b45d482d252f20214e9641df4fd9516da27..443b2f900c0b8878802b035feebf5f90ed0e7f60 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -2156,6 +2156,10 @@ test("unit_tests") {
             chrome_tests_unit_gypi_values.chrome_unit_tests_app_list_sources,
             ".",
             "//chrome")
+    if (is_mac) {
+      # This assumes the AppList is views-based.

[msw, 2016/05/05 01:51:07]

ditto nit: "and Mac uses Cocoa"?

[tapted, 2016/05/05 02:53:42]

Done.

+      sources -= [ "../browser/ui/app_list/app_list_shower_views_unittest.cc" ]
+    }
     deps += [ "//ui/app_list:test_support" ]
   }
   if (enable_app_list && is_chromeos) {