Add test runner support for overriding web_security_enabled preference.

content/shell/common/webkit_test_helpers.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 "content/shell/common/webkit_test_helpers.h"
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "base/strings/string_split.h"
@@ skipping 29 matching lines @@
   to->caret_browsing_enabled = from.caret_browsing_enabled;
   to->allow_displaying_insecure_content =
       from.allow_display_of_insecure_content;
   to->allow_running_insecure_content = from.allow_running_of_insecure_content;
   to->should_respect_image_orientation = from.should_respect_image_orientation;
   to->asynchronous_spell_checking_enabled =
       from.asynchronous_spell_checking_enabled;
   to->allow_file_access_from_file_urls = from.allow_file_access_from_file_urls;
   to->javascript_can_open_windows_automatically =
       from.java_script_can_open_windows_automatically;
+  to->web_security_enabled =
+      from.web_security_enabled;
 }
 
 // Applies settings that differ between layout tests and regular mode. Some
 // of the defaults are controlled via command line flags which are
 // automatically set for layout tests.
 void ApplyLayoutTestDefaultPreferences(WebPreferences* prefs) {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   prefs->allow_universal_access_from_file_urls = true;
   prefs->dom_paste_enabled = true;
   prefs->javascript_can_access_clipboard = true;
@@ skipping 53 matching lines @@
   if (command_line.HasSwitch(switches::kRegisterFontFiles)) {
     base::SplitString(
         command_line.GetSwitchValueASCII(switches::kRegisterFontFiles),
         ';',
         &files);
   }
   return files;
 }
 
 }  // namespace content