Disables two tests that seem to fail on aura.

chrome/browser/ui/webui/options/chromeos/guest_mode_options_ui_uitest.cc

Index: chrome/browser/ui/webui/options/chromeos/guest_mode_options_ui_uitest.cc
diff --git a/chrome/browser/ui/webui/options/chromeos/guest_mode_options_ui_uitest.cc b/chrome/browser/ui/webui/options/chromeos/guest_mode_options_ui_uitest.cc
index 2c671381828f3b9a34d36369402ce2331273b876..0c762c2c68d5f47c41a2b149edf435cdd754589d 100644
--- a/chrome/browser/ui/webui/options/chromeos/guest_mode_options_ui_uitest.cc
+++ b/chrome/browser/ui/webui/options/chromeos/guest_mode_options_ui_uitest.cc
@@ -20,7 +20,14 @@ class GuestModeOptionsUITest : public OptionsUITest {
   }
 };
 
-TEST_F(GuestModeOptionsUITest, LoadOptionsByURL) {
+// See bug 104393.
+#if defined(USE_AURA)
+#define MAYBE_LoadOptionsByURL FAILS_LoadOptionsByURL
+#else
+#define MAYBE_LoadOptionsByURL LoadOptionsByURL
+#endif
+
+TEST_F(GuestModeOptionsUITest, MAYBE_LoadOptionsByURL) {
   scoped_refptr<BrowserProxy> browser(automation()->GetBrowserWindow(0));
   ASSERT_TRUE(browser.get());