Disable FormAutofillTest.WebFormElementToFormDataTooManyFields on Mac and CrOS

chrome/renderer/autofill/form_autofill_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 
 #include <vector>
 
 #include "base/format_macros.h"
 #include "base/macros.h"
@@ skipping 2216 matching lines @@
 
   FormData form;
   EXPECT_TRUE(WebFormElementToFormData(web_form, WebFormControlElement(),
                                        EXTRACT_NONE, &form, nullptr));
 
   const std::vector<FormFieldData>& fields = form.fields;
   ASSERT_EQ(1U, fields.size());
   EXPECT_EQ(ASCIIToUTF16("firstname"), fields[0].name);
 }
 
+// TODO(crbug.com/616730) Flaky.
+#if defined(OS_CHROMEOS) || defined(OS_MACOSX)
+#define MAYBE_WebFormElementToFormDataTooManyFields \
+  DISABLED_WebFormElementToFormDataTooManyFields
+#else
+#define MAYBE_WebFormElementToFormDataTooManyFields \
+  WebFormElementToFormDataTooManyFields
+#endif
 // We should not be able to serialize a form with too many fillable fields.
-TEST_F(FormAutofillTest, WebFormElementToFormDataTooManyFields) {
+TEST_F(FormAutofillTest, MAYBE_WebFormElementToFormDataTooManyFields) {
   std::string html =
       "<FORM name='TestForm' action='http://cnn.com' method='post'>";
   for (size_t i = 0; i < (kMaxParseableFields + 1); ++i) {
     html += "<INPUT type='text'/>";
   }
   html += "</FORM>";
   LoadHTML(html.c_str());
 
   WebFrame* frame = GetMainFrame();
   ASSERT_NE(nullptr, frame);
@@ skipping 2325 matching lines @@
 
     if (test_case.has_extracted_form) {
       EXPECT_EQ(test_case.is_form_tag, forms[0].is_form_tag);
       EXPECT_EQ(test_case.is_formless_checkout, forms[0].is_formless_checkout);
     }
   }
 }
 
 }  // namespace form_util
 }  // namespace autofill