Update SplitString calls in chrome.

chrome/browser/extensions/extension_apitest.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 "chrome/browser/extensions/extension_apitest.h"
 
 #include "base/base_switches.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 76 matching lines @@
     return nullptr;
 
   scoped_ptr<net::test_server::BasicHttpResponse> http_response(
       new net::test_server::BasicHttpResponse);
   http_response->set_code(net::HTTP_OK);
 
   size_t query_string_pos = request.relative_url.find('?');
   std::string cookie_value =
       request.relative_url.substr(query_string_pos + 1);
 
-  std::vector<std::string> cookies;
-  base::SplitString(cookie_value, '&', &cookies);
-
-  for (size_t i = 0; i < cookies.size(); i++)
-    http_response->AddCustomHeader("Set-Cookie", cookies[i]);
+  for (const std::string& cookie : base::SplitString(
+           cookie_value, "&", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL))
+    http_response->AddCustomHeader("Set-Cookie", cookie);
 
   return http_response.Pass();
 }
 
 scoped_ptr<net::test_server::HttpResponse> HandleSetHeaderRequest(
     const net::test_server::HttpRequest& request) {
   if (!base::StartsWith(request.relative_url, "/set-header?",
                         base::CompareCase::SENSITIVE))
     return nullptr;
 
@@ skipping 317 matching lines @@
 }
 
 void ExtensionApiTest::SetUpCommandLine(base::CommandLine* command_line) {
   ExtensionBrowserTest::SetUpCommandLine(command_line);
   test_data_dir_ = test_data_dir_.AppendASCII("api_test");
   // Backgrounded renderer processes run at a lower priority, causing the
   // tests to take more time to complete. Disable backgrounding so that the
   // tests don't time out.
   command_line->AppendSwitch(switches::kDisableRendererBackgrounding);
 }