Disable AutofillInteractiveTest.FormFillableOnReset on CrOS.

AutofillInteractiveTest::PopulateForm has flaky timeouts on CrOS.

BUG=516052
TBR=estade@chromium.org

Change-Id: I40c3cfaf2a73488fe309e301d7c58317062cd440
Reviewed-on: https://chromium-review.googlesource.com/794130Reviewed-by: Greg Thompson <grt@chromium.org>
Commit-Queue: Greg Thompson <grt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519713}

chrome/browser/autofill/autofill_interactive_uitest.cc

@@ -1584,6 +1584,12 @@ IN_PROC_BROWSER_TEST_F(AutofillInteractiveTest,
 //   1. Fill form using a saved profile.
 //   2. Reset the form.
 //   3. Fill form using a saved profile.
+// Tests using PopulateForm() are flaky on CrOS; see https://crbug.com/516052.
+#if defined(OS_CHROMEOS)
+#define MAYBE_FormFillableOnReset DISABLED_FormFillableOnReset
+#else
+#define MAYBE_FormFillableOnReset FormFillableOnReset
+#endif
 IN_PROC_BROWSER_TEST_F(AutofillInteractiveTest, FormFillableOnReset) {
   CreateTestProfile();