Remove the ability to set the default search engine from JS.

chrome/renderer/external_extension_uitest.cc

 // Copyright (c) 2011 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/string_util.h"
 #include "base/test/test_timeouts.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/automation/automation_proxy.h"
@@ skipping 27 matching lines @@
 SearchProviderTest::SearchProviderTest()
     : test_server_(net::TestServer::TYPE_HTTP,
                    FilePath(FILE_PATH_LITERAL("chrome/test/data"))),
       test_server_started_(false) {
   // The test_server is started in the constructor (rather than the test body)
   // so the mapping rules below can include the ephemeral port number.
   test_server_started_ = test_server_.Start();
   if (!test_server_started_)
     return;
 
-  // Enable the search provider additions.
-  launch_arguments_.AppendSwitch(switches::kEnableSearchProviderApiV2);
-
   // Map all hosts to our local server.
   std::string host_rule("MAP * " + test_server_.host_port_pair().ToString());
   launch_arguments_.AppendSwitchASCII(switches::kHostRules, host_rule);
 
   // Get the url for the test page.
   search_provider_test_url_ =
       test_server_.GetURL("files/is_search_provider_installed.html");
 }
 
 struct IsSearchProviderTestData {
@@ skipping 125 matching lines @@
 TEST_F(SearchProviderTest, TestIsSearchProviderInstalledWithException) {
   // Change the url for the test page to one that throws an exception when
   // toString is called on the argument given to isSearchProviderInstalled.
   search_provider_test_url_ = test_server_.GetURL(
       "files/is_search_provider_installed_with_exception.html");
 
   scoped_refptr<BrowserProxy> browser(automation()->GetBrowserWindow(0));
   FinishIsSearchProviderInstalledTest(StartIsSearchProviderInstalledTest(
       browser, "www.google.com", ""));
 }