Fix ChromeDriver to support selecting option tags in optgroups

mouse_commands.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 "chrome/test/webdriver/commands/mouse_commands.h"
 
 #include "base/values.h"
 #include "chrome/common/automation_constants.h"
 #include "chrome/test/automation/value_conversion_util.h"
 #include "chrome/test/webdriver/commands/response.h"
@@ skipping 29 matching lines @@
   Error* error = session_->GetElementTagName(
       session_->current_target(), element, &tag_name);
   if (error) {
     response->SetError(error);
     return;
   }
 
   if (tag_name == "option") {
     const char* kCanOptionBeToggledScript =
         "function(option) {"
-        "  var select = option.parentElement;"
-        "  if (!select || select.tagName.toLowerCase() != 'select')"
-        "    throw new Error('Option element is not in a select');"
-        "  return select.multiple;"
-        "}";
+        "  for (var parent = option.parentElement;"
+        "       parent;"
+        "       parent = parent.parentElement) {"
+        "    if (parent.tagName.toLowerCase() == 'select') {"
+        "      return parent.multiple;"
+        "    }"
+        "  }"
+        "  throw new Error('Option element is not in a select');"
+        "};";
     bool can_be_toggled;
     error = session_->ExecuteScriptAndParse(
         session_->current_target(),
         kCanOptionBeToggledScript,
         "canOptionBeToggled",
         CreateListValueFrom(element),
         CreateDirectValueParser(&can_be_toggled));
     if (error) {
       response->SetError(error);
       return;
@@ skipping 237 matching lines @@
 
 void DoubleClickCommand::ExecutePost(Response* const response) {
   Error* error = session_->MouseDoubleClick();
   if (error) {
     response->SetError(error);
     return;
   }
 }
 
 }  // namespace webdriver