Enable chrome.automation.getDesktop on all aura platforms.

chrome/chrome_tests_unit.gypi

Index: chrome/chrome_tests_unit.gypi
diff --git a/chrome/chrome_tests_unit.gypi b/chrome/chrome_tests_unit.gypi
index 6ac61e4c4cc2fba7073d6a46c0a52021b5178350..0f3fd818a7de5fb787f6c6434ad9a821689a220f 100644
--- a/chrome/chrome_tests_unit.gypi
+++ b/chrome/chrome_tests_unit.gypi
@@ -936,7 +936,7 @@
       # Ash implies the app list is enabled (only disabled on mobile).
       'browser/ui/app_list/search/app_search_provider_unittest.cc',
       'browser/ui/app_list/search/history_unittest.cc',
-      'browser/ui/ash/accessibility/ax_tree_source_ash_unittest.cc',
+      'browser/ui/ash/accessibility/ax_tree_source_aura_unittest.cc',
       'browser/ui/ash/chrome_screenshot_grabber_unittest.cc',
       'browser/ui/ash/ime_controller_chromeos_unittest.cc',
       'browser/ui/ash/launcher/chrome_launcher_controller_unittest.cc',