Prevent autocomplete tests from being broken by data URL deprecation.

chrome/browser/autofill/autofill_server_browsertest.cc

 // Copyright 2014 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 "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 96 matching lines @@
   // there is local data available to use as a baseline.
   WindowedPersonalDataManagerObserver personal_data_observer(
       browser()->profile());
   PersonalDataManagerFactory::GetForProfile(browser()->profile())
       ->AddProfile(test::GetFullProfile());
   personal_data_observer.Wait();
 
   // Load the test page. Expect a query request upon loading the page.
   const char kDataURIPrefix[] = "data:text/html;charset=utf-8,";
   const char kFormHtml[] =
-      "<form id='test_form'>"
+      "<form id='test_form' action='about:blank'>"
       "  <input id='one'>"
       "  <input id='two' autocomplete='off'>"
       "  <input id='three'>"
       "  <input id='four' autocomplete='off'>"
       "  <input type='submit'>"
       "</form>"
       "<script>"
       "  document.onclick = function() {"
       "    document.getElementById('test_form').submit();"
       "  };"
@@ skipping 77 matching lines @@
   std::string expected_query_string;
   ASSERT_TRUE(query.SerializeToString(&expected_query_string));
 
   WindowedNetworkObserver query_network_observer(expected_query_string);
   ui_test_utils::NavigateToURL(
       browser(), GURL(std::string(kDataURIPrefix) + kFormHtml));
   query_network_observer.Wait();
 }
 
 }  // namespace autofill